diff --git a/docmlet/org.eclipse.statet.docmlet.base.core-tests/.classpath b/docmlet/org.eclipse.statet.docmlet.base.core-tests/.classpath
index 78c94b4..b9bb8ea 100644
--- a/docmlet/org.eclipse.statet.docmlet.base.core-tests/.classpath
+++ b/docmlet/org.eclipse.statet.docmlet.base.core-tests/.classpath
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="annotationpath" value="/org.eclipse.statet/eea/"/>
 		</attributes>
 	</classpathentry>
diff --git a/docmlet/org.eclipse.statet.docmlet.base.core-tests/.settings/org.eclipse.jdt.core.prefs b/docmlet/org.eclipse.statet.docmlet.base.core-tests/.settings/org.eclipse.jdt.core.prefs
index d3b515b..db488b8 100644
--- a/docmlet/org.eclipse.statet.docmlet.base.core-tests/.settings/org.eclipse.jdt.core.prefs
+++ b/docmlet/org.eclipse.statet.docmlet.base.core-tests/.settings/org.eclipse.jdt.core.prefs
@@ -20,9 +20,9 @@
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -123,8 +123,8 @@
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
diff --git a/docmlet/org.eclipse.statet.docmlet.base.core-tests/META-INF/MANIFEST.MF b/docmlet/org.eclipse.statet.docmlet.base.core-tests/META-INF/MANIFEST.MF
index 0faf9de..4b81a2a 100644
--- a/docmlet/org.eclipse.statet.docmlet.base.core-tests/META-INF/MANIFEST.MF
+++ b/docmlet/org.eclipse.statet.docmlet.base.core-tests/META-INF/MANIFEST.MF
@@ -6,5 +6,5 @@
 Bundle-Vendor: Eclipse StatET
 Bundle-Name: StatET DocMLET - Base - Core - Tests  (Incubation)
 Fragment-Host: org.eclipse.statet.docmlet.base.core
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Import-Package: org.junit.jupiter.api;bundle-version="5.5.1"
diff --git a/docmlet/org.eclipse.statet.docmlet.base.core/.classpath b/docmlet/org.eclipse.statet.docmlet.base.core/.classpath
index 78c94b4..b9bb8ea 100644
--- a/docmlet/org.eclipse.statet.docmlet.base.core/.classpath
+++ b/docmlet/org.eclipse.statet.docmlet.base.core/.classpath
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="annotationpath" value="/org.eclipse.statet/eea/"/>
 		</attributes>
 	</classpathentry>
diff --git a/docmlet/org.eclipse.statet.docmlet.base.core/.settings/org.eclipse.jdt.core.prefs b/docmlet/org.eclipse.statet.docmlet.base.core/.settings/org.eclipse.jdt.core.prefs
index d3b515b..db488b8 100644
--- a/docmlet/org.eclipse.statet.docmlet.base.core/.settings/org.eclipse.jdt.core.prefs
+++ b/docmlet/org.eclipse.statet.docmlet.base.core/.settings/org.eclipse.jdt.core.prefs
@@ -20,9 +20,9 @@
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -123,8 +123,8 @@
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
diff --git a/docmlet/org.eclipse.statet.docmlet.base.core/META-INF/MANIFEST.MF b/docmlet/org.eclipse.statet.docmlet.base.core/META-INF/MANIFEST.MF
index 6908c5c..9b28234 100644
--- a/docmlet/org.eclipse.statet.docmlet.base.core/META-INF/MANIFEST.MF
+++ b/docmlet/org.eclipse.statet.docmlet.base.core/META-INF/MANIFEST.MF
@@ -6,7 +6,7 @@
 Bundle-Vendor: Eclipse StatET
 Bundle-Name: StatET DocMLET - Base - Core  (Incubation)
 Bundle-ActivationPolicy: lazy
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.eclipse.statet.ecommons.runtime.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.statet.ltk.core;bundle-version="[4.3.0,4.4.0)";visibility:=reexport
 Import-Package: org.eclipse.statet.jcommons.collections;version="4.3.0",
diff --git a/docmlet/org.eclipse.statet.docmlet.base.ui/.classpath b/docmlet/org.eclipse.statet.docmlet.base.ui/.classpath
index 78c94b4..b9bb8ea 100644
--- a/docmlet/org.eclipse.statet.docmlet.base.ui/.classpath
+++ b/docmlet/org.eclipse.statet.docmlet.base.ui/.classpath
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="annotationpath" value="/org.eclipse.statet/eea/"/>
 		</attributes>
 	</classpathentry>
diff --git a/docmlet/org.eclipse.statet.docmlet.base.ui/.settings/org.eclipse.jdt.core.prefs b/docmlet/org.eclipse.statet.docmlet.base.ui/.settings/org.eclipse.jdt.core.prefs
index d3b515b..db488b8 100644
--- a/docmlet/org.eclipse.statet.docmlet.base.ui/.settings/org.eclipse.jdt.core.prefs
+++ b/docmlet/org.eclipse.statet.docmlet.base.ui/.settings/org.eclipse.jdt.core.prefs
@@ -20,9 +20,9 @@
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -123,8 +123,8 @@
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
diff --git a/docmlet/org.eclipse.statet.docmlet.base.ui/META-INF/MANIFEST.MF b/docmlet/org.eclipse.statet.docmlet.base.ui/META-INF/MANIFEST.MF
index 3d8fc38..07bd7ca 100644
--- a/docmlet/org.eclipse.statet.docmlet.base.ui/META-INF/MANIFEST.MF
+++ b/docmlet/org.eclipse.statet.docmlet.base.ui/META-INF/MANIFEST.MF
@@ -8,7 +8,7 @@
 Bundle-ActivationPolicy: lazy
 Bundle-Activator: org.eclipse.statet.internal.docmlet.base.ui.DocmlBaseUIPlugin
 Bundle-Localization: plugin
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.eclipse.statet.ecommons.runtime.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.statet.ecommons.databinding.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.core.databinding.property,
diff --git a/docmlet/org.eclipse.statet.docmlet.tex.core/.classpath b/docmlet/org.eclipse.statet.docmlet.tex.core/.classpath
index 78c94b4..b9bb8ea 100644
--- a/docmlet/org.eclipse.statet.docmlet.tex.core/.classpath
+++ b/docmlet/org.eclipse.statet.docmlet.tex.core/.classpath
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="annotationpath" value="/org.eclipse.statet/eea/"/>
 		</attributes>
 	</classpathentry>
diff --git a/docmlet/org.eclipse.statet.docmlet.tex.core/.settings/org.eclipse.jdt.core.prefs b/docmlet/org.eclipse.statet.docmlet.tex.core/.settings/org.eclipse.jdt.core.prefs
index d3b515b..db488b8 100644
--- a/docmlet/org.eclipse.statet.docmlet.tex.core/.settings/org.eclipse.jdt.core.prefs
+++ b/docmlet/org.eclipse.statet.docmlet.tex.core/.settings/org.eclipse.jdt.core.prefs
@@ -20,9 +20,9 @@
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -123,8 +123,8 @@
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
diff --git a/docmlet/org.eclipse.statet.docmlet.tex.core/META-INF/MANIFEST.MF b/docmlet/org.eclipse.statet.docmlet.tex.core/META-INF/MANIFEST.MF
index de53506..19e32aa 100644
--- a/docmlet/org.eclipse.statet.docmlet.tex.core/META-INF/MANIFEST.MF
+++ b/docmlet/org.eclipse.statet.docmlet.tex.core/META-INF/MANIFEST.MF
@@ -8,7 +8,7 @@
 Bundle-ActivationPolicy: lazy
 Bundle-Activator: org.eclipse.statet.internal.docmlet.tex.core.TexCorePlugin
 Bundle-Localization: plugin
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.eclipse.statet.ecommons.runtime.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.statet.docmlet.base.core;bundle-version="[4.3.0,4.4.0)";visibility:=reexport,
  org.eclipse.statet.ecommons.preferences.core;visibility:=reexport,
diff --git a/docmlet/org.eclipse.statet.docmlet.tex.ui/.classpath b/docmlet/org.eclipse.statet.docmlet.tex.ui/.classpath
index 78c94b4..b9bb8ea 100644
--- a/docmlet/org.eclipse.statet.docmlet.tex.ui/.classpath
+++ b/docmlet/org.eclipse.statet.docmlet.tex.ui/.classpath
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="annotationpath" value="/org.eclipse.statet/eea/"/>
 		</attributes>
 	</classpathentry>
diff --git a/docmlet/org.eclipse.statet.docmlet.tex.ui/.settings/org.eclipse.jdt.core.prefs b/docmlet/org.eclipse.statet.docmlet.tex.ui/.settings/org.eclipse.jdt.core.prefs
index d3b515b..db488b8 100644
--- a/docmlet/org.eclipse.statet.docmlet.tex.ui/.settings/org.eclipse.jdt.core.prefs
+++ b/docmlet/org.eclipse.statet.docmlet.tex.ui/.settings/org.eclipse.jdt.core.prefs
@@ -20,9 +20,9 @@
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -123,8 +123,8 @@
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
diff --git a/docmlet/org.eclipse.statet.docmlet.tex.ui/META-INF/MANIFEST.MF b/docmlet/org.eclipse.statet.docmlet.tex.ui/META-INF/MANIFEST.MF
index 9d8e745..ac95d51 100644
--- a/docmlet/org.eclipse.statet.docmlet.tex.ui/META-INF/MANIFEST.MF
+++ b/docmlet/org.eclipse.statet.docmlet.tex.ui/META-INF/MANIFEST.MF
@@ -8,7 +8,7 @@
 Bundle-ActivationPolicy: lazy
 Bundle-Activator: org.eclipse.statet.internal.docmlet.tex.ui.TexUIPlugin
 Bundle-Localization: plugin
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.eclipse.statet.ecommons.runtime.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.core.filesystem,
  org.eclipse.statet.ecommons.databinding.core;bundle-version="[4.3.0,4.4.0)",
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/.classpath b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/.classpath
index 78c94b4..b9bb8ea 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/.classpath
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/.classpath
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="annotationpath" value="/org.eclipse.statet/eea/"/>
 		</attributes>
 	</classpathentry>
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/.settings/org.eclipse.jdt.core.prefs b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/.settings/org.eclipse.jdt.core.prefs
index d3b515b..db488b8 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/.settings/org.eclipse.jdt.core.prefs
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/.settings/org.eclipse.jdt.core.prefs
@@ -20,9 +20,9 @@
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -123,8 +123,8 @@
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/META-INF/MANIFEST.MF b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/META-INF/MANIFEST.MF
index b573be1..78fa750 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/META-INF/MANIFEST.MF
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core-tests/META-INF/MANIFEST.MF
@@ -6,7 +6,7 @@
 Bundle-Vendor: Eclipse StatET
 Bundle-Name: StatET DocMLET - Wikitext - CommonMark - Core - Tests  (Incubation)
 Fragment-Host: org.eclipse.statet.docmlet.wikitext.commonmark.core
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.junit;bundle-version="4.12.0",
  org.jsoup;bundle-version="1.8.3"
 Import-Package: com.google.common.base;version="21.0.0",
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core/.classpath b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core/.classpath
index 78c94b4..b9bb8ea 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core/.classpath
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core/.classpath
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="annotationpath" value="/org.eclipse.statet/eea/"/>
 		</attributes>
 	</classpathentry>
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core/.settings/org.eclipse.jdt.core.prefs b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core/.settings/org.eclipse.jdt.core.prefs
index d3b515b..db488b8 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core/.settings/org.eclipse.jdt.core.prefs
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core/.settings/org.eclipse.jdt.core.prefs
@@ -20,9 +20,9 @@
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -123,8 +123,8 @@
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core/META-INF/MANIFEST.MF b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core/META-INF/MANIFEST.MF
index 0e67dbb..d5ff14d 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core/META-INF/MANIFEST.MF
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.core/META-INF/MANIFEST.MF
@@ -7,7 +7,7 @@
 Bundle-Name: StatET DocMLET - Wikitext - CommonMark - Core  (Incubation)
 Bundle-ActivationPolicy: lazy
 Bundle-Localization: plugin
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.eclipse.statet.ecommons.runtime.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.statet.ltk.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.statet.docmlet.wikitext.core;bundle-version="[4.3.0,4.4.0)";visibility:=reexport
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.ui/.classpath b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.ui/.classpath
index 78c94b4..b9bb8ea 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.ui/.classpath
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.ui/.classpath
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="annotationpath" value="/org.eclipse.statet/eea/"/>
 		</attributes>
 	</classpathentry>
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.ui/.settings/org.eclipse.jdt.core.prefs b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.ui/.settings/org.eclipse.jdt.core.prefs
index d3b515b..db488b8 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.ui/.settings/org.eclipse.jdt.core.prefs
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.ui/.settings/org.eclipse.jdt.core.prefs
@@ -20,9 +20,9 @@
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -123,8 +123,8 @@
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.ui/META-INF/MANIFEST.MF b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.ui/META-INF/MANIFEST.MF
index ff01eeb..385702d 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.ui/META-INF/MANIFEST.MF
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.commonmark.ui/META-INF/MANIFEST.MF
@@ -7,7 +7,7 @@
 Bundle-Name: StatET DocMLET - Wikitext - CommonMark - UI  (Incubation)
 Bundle-ActivationPolicy: lazy
 Bundle-Localization: plugin
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.eclipse.statet.ecommons.runtime.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.statet.ecommons.databinding.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.ui,
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.core/.classpath b/docmlet/org.eclipse.statet.docmlet.wikitext.core/.classpath
index 78c94b4..b9bb8ea 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.core/.classpath
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.core/.classpath
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="annotationpath" value="/org.eclipse.statet/eea/"/>
 		</attributes>
 	</classpathentry>
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.core/.settings/org.eclipse.jdt.core.prefs b/docmlet/org.eclipse.statet.docmlet.wikitext.core/.settings/org.eclipse.jdt.core.prefs
index d3b515b..db488b8 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.core/.settings/org.eclipse.jdt.core.prefs
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.core/.settings/org.eclipse.jdt.core.prefs
@@ -20,9 +20,9 @@
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -123,8 +123,8 @@
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.core/META-INF/MANIFEST.MF b/docmlet/org.eclipse.statet.docmlet.wikitext.core/META-INF/MANIFEST.MF
index 6200834..708bec3 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.core/META-INF/MANIFEST.MF
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.core/META-INF/MANIFEST.MF
@@ -8,7 +8,7 @@
 Bundle-ActivationPolicy: lazy
 Bundle-Activator: org.eclipse.statet.internal.docmlet.wikitext.core.WikitextCorePlugin
 Bundle-Localization: plugin
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.eclipse.statet.ecommons.runtime.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.statet.docmlet.base.core;bundle-version="[4.3.0,4.4.0)";visibility:=reexport,
  org.eclipse.statet.ecommons.preferences.core;visibility:=reexport,
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.ui/.classpath b/docmlet/org.eclipse.statet.docmlet.wikitext.ui/.classpath
index 78c94b4..b9bb8ea 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.ui/.classpath
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.ui/.classpath
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="annotationpath" value="/org.eclipse.statet/eea/"/>
 		</attributes>
 	</classpathentry>
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.ui/.settings/org.eclipse.jdt.core.prefs b/docmlet/org.eclipse.statet.docmlet.wikitext.ui/.settings/org.eclipse.jdt.core.prefs
index d3b515b..db488b8 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.ui/.settings/org.eclipse.jdt.core.prefs
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.ui/.settings/org.eclipse.jdt.core.prefs
@@ -20,9 +20,9 @@
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -123,8 +123,8 @@
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
diff --git a/docmlet/org.eclipse.statet.docmlet.wikitext.ui/META-INF/MANIFEST.MF b/docmlet/org.eclipse.statet.docmlet.wikitext.ui/META-INF/MANIFEST.MF
index 6888e68..a36dea1 100644
--- a/docmlet/org.eclipse.statet.docmlet.wikitext.ui/META-INF/MANIFEST.MF
+++ b/docmlet/org.eclipse.statet.docmlet.wikitext.ui/META-INF/MANIFEST.MF
@@ -8,7 +8,7 @@
 Bundle-ActivationPolicy: lazy
 Bundle-Activator: org.eclipse.statet.internal.docmlet.wikitext.ui.WikitextUIPlugin
 Bundle-Localization: plugin
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.eclipse.statet.ecommons.runtime.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.ui,
  org.eclipse.jface.databinding,
diff --git a/yaml/org.eclipse.statet.yaml.core/.classpath b/yaml/org.eclipse.statet.yaml.core/.classpath
index ebe8ab2..f33da25 100644
--- a/yaml/org.eclipse.statet.yaml.core/.classpath
+++ b/yaml/org.eclipse.statet.yaml.core/.classpath
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="annotationpath" value="/org.eclipse.statet/eea/"/>
 		</attributes>
 	</classpathentry>
diff --git a/yaml/org.eclipse.statet.yaml.core/.settings/org.eclipse.jdt.core.prefs b/yaml/org.eclipse.statet.yaml.core/.settings/org.eclipse.jdt.core.prefs
index d3b515b..db488b8 100644
--- a/yaml/org.eclipse.statet.yaml.core/.settings/org.eclipse.jdt.core.prefs
+++ b/yaml/org.eclipse.statet.yaml.core/.settings/org.eclipse.jdt.core.prefs
@@ -20,9 +20,9 @@
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -123,8 +123,8 @@
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
diff --git a/yaml/org.eclipse.statet.yaml.core/META-INF/MANIFEST.MF b/yaml/org.eclipse.statet.yaml.core/META-INF/MANIFEST.MF
index f338891..db65c2d 100644
--- a/yaml/org.eclipse.statet.yaml.core/META-INF/MANIFEST.MF
+++ b/yaml/org.eclipse.statet.yaml.core/META-INF/MANIFEST.MF
@@ -8,7 +8,7 @@
 Bundle-ActivationPolicy: lazy
 Bundle-Activator: org.eclipse.statet.internal.yaml.core.YamlCorePlugin
 Bundle-Localization: plugin
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.eclipse.statet.ecommons.runtime.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.statet.ecommons.preferences.core;visibility:=reexport,
  org.eclipse.core.filebuffers,
diff --git a/yaml/org.eclipse.statet.yaml.ui/.classpath b/yaml/org.eclipse.statet.yaml.ui/.classpath
index 78c94b4..b9bb8ea 100644
--- a/yaml/org.eclipse.statet.yaml.ui/.classpath
+++ b/yaml/org.eclipse.statet.yaml.ui/.classpath
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="annotationpath" value="/org.eclipse.statet/eea/"/>
 		</attributes>
 	</classpathentry>
diff --git a/yaml/org.eclipse.statet.yaml.ui/.settings/org.eclipse.jdt.core.prefs b/yaml/org.eclipse.statet.yaml.ui/.settings/org.eclipse.jdt.core.prefs
index d3b515b..db488b8 100644
--- a/yaml/org.eclipse.statet.yaml.ui/.settings/org.eclipse.jdt.core.prefs
+++ b/yaml/org.eclipse.statet.yaml.ui/.settings/org.eclipse.jdt.core.prefs
@@ -20,9 +20,9 @@
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=enabled
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
 org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.debug.lineNumber=generate
 org.eclipse.jdt.core.compiler.debug.localVariable=generate
 org.eclipse.jdt.core.compiler.debug.sourceFile=generate
@@ -123,8 +123,8 @@
 org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
-org.eclipse.jdt.core.compiler.release=disabled
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=11
 org.eclipse.jdt.core.formatter.align_assignment_statements_on_columns=false
 org.eclipse.jdt.core.formatter.align_fields_grouping_blank_lines=2147483647
 org.eclipse.jdt.core.formatter.align_type_members_on_columns=false
diff --git a/yaml/org.eclipse.statet.yaml.ui/META-INF/MANIFEST.MF b/yaml/org.eclipse.statet.yaml.ui/META-INF/MANIFEST.MF
index 053cbd6..718f6ec 100644
--- a/yaml/org.eclipse.statet.yaml.ui/META-INF/MANIFEST.MF
+++ b/yaml/org.eclipse.statet.yaml.ui/META-INF/MANIFEST.MF
@@ -8,7 +8,7 @@
 Bundle-ActivationPolicy: lazy
 Bundle-Activator: org.eclipse.statet.internal.yaml.ui.YamlUIPlugin
 Bundle-Localization: plugin
-Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.eclipse.statet.ecommons.runtime.core;bundle-version="[4.3.0,4.4.0)",
  org.eclipse.core.filesystem,
  org.eclipse.statet.ecommons.databinding.core;bundle-version="[4.3.0,4.4.0)",