Try Java 12
diff --git a/releng/org.eclipse.ocl.releng.tycho/pom.xml b/releng/org.eclipse.ocl.releng.tycho/pom.xml
index 82ebebb..5a5e462 100644
--- a/releng/org.eclipse.ocl.releng.tycho/pom.xml
+++ b/releng/org.eclipse.ocl.releng.tycho/pom.xml
@@ -123,7 +123,7 @@
           <includePackedArtifacts>true</includePackedArtifacts>
           <resolver>p2</resolver>
           <!-- org.eclipse.equinox.http.jetty seems to need JavaSE-1.8 to be explicit. See Bug 541797 -->
-          <executionEnvironment>JavaSE-1.8</executionEnvironment>
+          <executionEnvironment>JavaSE-12</executionEnvironment>
           <target>
             <artifact>
               <groupId>org.eclipse.ocl</groupId>