diff --git a/plugins/org.eclipse.dltk.ruby.abstractdebugger/.classpath b/plugins/org.eclipse.dltk.ruby.abstractdebugger/.classpath
index 64c5e31..ad32c83 100644
--- a/plugins/org.eclipse.dltk.ruby.abstractdebugger/.classpath
+++ b/plugins/org.eclipse.dltk.ruby.abstractdebugger/.classpath
@@ -1,6 +1,6 @@
 <?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/J2SE-1.5"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
 	<classpathentry kind="src" path="src"/>
 	<classpathentry kind="output" path="bin"/>
diff --git a/plugins/org.eclipse.dltk.ruby.abstractdebugger/.settings/org.eclipse.jdt.core.prefs b/plugins/org.eclipse.dltk.ruby.abstractdebugger/.settings/org.eclipse.jdt.core.prefs
index af0f20f..c537b63 100644
--- a/plugins/org.eclipse.dltk.ruby.abstractdebugger/.settings/org.eclipse.jdt.core.prefs
+++ b/plugins/org.eclipse.dltk.ruby.abstractdebugger/.settings/org.eclipse.jdt.core.prefs
@@ -1,7 +1,7 @@
 eclipse.preferences.version=1
 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
-org.eclipse.jdt.core.compiler.compliance=1.5
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.6
+org.eclipse.jdt.core.compiler.compliance=1.6
 org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
 org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
-org.eclipse.jdt.core.compiler.source=1.5
+org.eclipse.jdt.core.compiler.source=1.6
diff --git a/plugins/org.eclipse.dltk.ruby.abstractdebugger/META-INF/MANIFEST.MF b/plugins/org.eclipse.dltk.ruby.abstractdebugger/META-INF/MANIFEST.MF
index 835a181..1452532 100644
--- a/plugins/org.eclipse.dltk.ruby.abstractdebugger/META-INF/MANIFEST.MF
+++ b/plugins/org.eclipse.dltk.ruby.abstractdebugger/META-INF/MANIFEST.MF
@@ -10,4 +10,4 @@
 Bundle-Vendor: %providerName
 Export-Package: org.eclipse.dltk.ruby.abstractdebugger
 Bundle-Activator: org.eclipse.dltk.ruby.abstractdebugger.AbstractRubyDebuggerPlugin
-Bundle-RequiredExecutionEnvironment: J2SE-1.5
+Bundle-RequiredExecutionEnvironment: JavaSE-1.6