diff --git a/samples/fitch/build.xml b/samples/fitch/build.xml
index c390d61f..aeb6dc2c 100644
--- a/samples/fitch/build.xml
+++ b/samples/fitch/build.xml
@@ -1725,6 +1725,39 @@
       <jvmarg value="-XX:+HeapDumpOnOutOfMemoryError" />
       <jvmarg value="-Didea.config.path=${build.mps.config.path}" />
       <jvmarg value="-Didea.system.path=${build.mps.system.path}" />
+      <jvmarg value="--add-opens=java.base/java.io=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.lang=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.lang.reflect=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.net=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.nio=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.nio.charset=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.text=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.time=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.util=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.util.concurrent=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/jdk.internal.vm=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/sun.nio.ch=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/sun.security.ssl=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/sun.security.util=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/java.awt=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/java.awt.dnd.peer=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/java.awt.event=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/java.awt.image=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/java.awt.peer=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/javax.swing=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/javax.swing.plaf.basic=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/javax.swing.text.html=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/sun.awt.datatransfer=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/sun.awt.image=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/sun.awt=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/sun.font=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/sun.java2d=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/sun.swing=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=jdk.attach/sun.tools.attach=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=jdk.internal.jvmstat/sun.jvmstat.monitor=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=jdk.jdi/com.sun.tools.jdi=ALL-UNNAMED" />
       
       <classpath>
         <fileset dir="${build.tmp}">
diff --git a/samples/lambdacalc/build.xml b/samples/lambdacalc/build.xml
index 064fb68f..96b199b2 100644
--- a/samples/lambdacalc/build.xml
+++ b/samples/lambdacalc/build.xml
@@ -721,6 +721,39 @@
       <jvmarg value="-XX:+HeapDumpOnOutOfMemoryError" />
       <jvmarg value="-Didea.config.path=${build.mps.config.path}" />
       <jvmarg value="-Didea.system.path=${build.mps.system.path}" />
+      <jvmarg value="--add-opens=java.base/java.io=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.lang=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.lang.reflect=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.net=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.nio=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.nio.charset=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.text=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.time=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.util=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.util.concurrent=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/jdk.internal.vm=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/sun.nio.ch=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/sun.security.ssl=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.base/sun.security.util=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/java.awt=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/java.awt.dnd.peer=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/java.awt.event=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/java.awt.image=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/java.awt.peer=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/javax.swing=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/javax.swing.plaf.basic=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/javax.swing.text.html=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/sun.awt.datatransfer=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/sun.awt.image=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/sun.awt=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/sun.font=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/sun.java2d=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=java.desktop/sun.swing=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=jdk.attach/sun.tools.attach=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=jdk.internal.jvmstat/sun.jvmstat.monitor=ALL-UNNAMED" />
+      <jvmarg value="--add-opens=jdk.jdi/com.sun.tools.jdi=ALL-UNNAMED" />
       
       <classpath>
         <fileset dir="${build.tmp}">