diff --git a/org.eclipse.blockchain.application/META-INF/MANIFEST.MF b/org.eclipse.blockchain.application/META-INF/MANIFEST.MF
index 219f923..17c660f 100644
--- a/org.eclipse.blockchain.application/META-INF/MANIFEST.MF
+++ b/org.eclipse.blockchain.application/META-INF/MANIFEST.MF
@@ -5,4 +5,4 @@
 Bundle-Version: 1.0.0.qualifier
 Fragment-Host: org.eclipse.ui.ide.application;bundle-version="1.2.100"
 Automatic-Module-Name: org.eclipse.blockchain.application
-Bundle-RequiredExecutionEnvironment: JavaSE-10
+Bundle-RequiredExecutionEnvironment: JavaSE-1.8
diff --git a/org.eclipse.blockchain.core/META-INF/MANIFEST.MF b/org.eclipse.blockchain.core/META-INF/MANIFEST.MF
index 111aef2..b5d8d34 100644
--- a/org.eclipse.blockchain.core/META-INF/MANIFEST.MF
+++ b/org.eclipse.blockchain.core/META-INF/MANIFEST.MF
@@ -4,7 +4,7 @@
 Bundle-SymbolicName: org.eclipse.blockchain.core;singleton:=true
 Bundle-Version: 1.0.0.qualifier
 Automatic-Module-Name: org.eclipse.blockchain.core
-Bundle-RequiredExecutionEnvironment: JavaSE-10
+Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Require-Bundle: org.eclipse.core.resources,
  org.eclipse.core.runtime,
  org.eclipse.core.filesystem,
diff --git a/org.eclipse.blockchain.product/META-INF/MANIFEST.MF b/org.eclipse.blockchain.product/META-INF/MANIFEST.MF
index 370277a..8abc205 100644
--- a/org.eclipse.blockchain.product/META-INF/MANIFEST.MF
+++ b/org.eclipse.blockchain.product/META-INF/MANIFEST.MF
@@ -4,7 +4,7 @@
 Bundle-SymbolicName: org.eclipse.blockchain.product;singleton:=true
 Bundle-Version: 1.0.0.qualifier
 Automatic-Module-Name: org.eclipse.blockchain.product
-Bundle-RequiredExecutionEnvironment: JavaSE-10
+Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Require-Bundle: org.eclipse.equinox.app,
  org.eclipse.ui,
  org.eclipse.ui.intro,
diff --git a/org.eclipse.blockchain.server.core/META-INF/MANIFEST.MF b/org.eclipse.blockchain.server.core/META-INF/MANIFEST.MF
index 3ddbd40..72bc38a 100644
--- a/org.eclipse.blockchain.server.core/META-INF/MANIFEST.MF
+++ b/org.eclipse.blockchain.server.core/META-INF/MANIFEST.MF
@@ -4,7 +4,7 @@
 Bundle-SymbolicName: org.eclipse.blockchain.server.core;singleton:=true
 Bundle-Version: 1.0.0.qualifier
 Automatic-Module-Name: org.eclipse.blockchain.server.core
-Bundle-RequiredExecutionEnvironment: JavaSE-10
+Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Require-Bundle: org.eclipse.wst.server.core,
  org.eclipse.core.runtime,
  org.eclipse.blockchain.core
diff --git a/org.eclipse.blockchain.server.ui/META-INF/MANIFEST.MF b/org.eclipse.blockchain.server.ui/META-INF/MANIFEST.MF
index d5e0a2e..73826be 100644
--- a/org.eclipse.blockchain.server.ui/META-INF/MANIFEST.MF
+++ b/org.eclipse.blockchain.server.ui/META-INF/MANIFEST.MF
@@ -4,7 +4,7 @@
 Bundle-SymbolicName: org.eclipse.blockchain.server.ui;singleton:=true
 Bundle-Version: 1.0.0.qualifier
 Automatic-Module-Name: org.eclipse.blockchain.server.ui
-Bundle-RequiredExecutionEnvironment: JavaSE-10
+Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Require-Bundle: org.eclipse.wst.server.ui,
  org.eclipse.blockchain.server.core,
  org.eclipse.swt,
diff --git a/org.eclipse.blockchain.ui/META-INF/MANIFEST.MF b/org.eclipse.blockchain.ui/META-INF/MANIFEST.MF
index 11dbf78..3719195 100644
--- a/org.eclipse.blockchain.ui/META-INF/MANIFEST.MF
+++ b/org.eclipse.blockchain.ui/META-INF/MANIFEST.MF
@@ -4,7 +4,7 @@
 Bundle-SymbolicName: org.eclipse.blockchain.ui;singleton:=true
 Bundle-Version: 1.0.0.qualifier
 Automatic-Module-Name: org.eclipse.blockchain.ui
-Bundle-RequiredExecutionEnvironment: JavaSE-10
+Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Require-Bundle: org.eclipse.ui,
  org.eclipse.ui.views,
  org.eclipse.core.runtime,