diff --git a/sources b/sources
index ec3bd6d..9f3e919 100644
--- a/sources
+++ b/sources
@@ -1,3 +1,3 @@
 SHA512 (fedoraproject-p2-290f67a4c717599b2f5166ea89aa5365571314b1.tar.gz) = 5ddfa3e7c1dc3d64335d836d74d7325904f294e0ab1782de41a8815b09ddf42f0c47a263c3a6217626aaf293a17788d01174c327e17b192a0f451d07d5655c49
-SHA512 (eclipse-bootstrap-2020-09.tar.xz) = a04d0cf15307ece55f594fa38c0b0c5d323260e6842d7167345cf10fd983579d4697d4793bc44e80f3f5c45300e92b2a42914028d29e82c7a71a8d985e90edf2
+SHA512 (eclipse-bootstrap-2020-09.tar.xz) = a534271fb86e23e0a11b3c3e943b5f981fcbd16e8a0c6b826752ed82e4fd1594af8318c1483798174b0aa2871d5744b3eb404235d89bbf7ace58b5d5fb156c1a
 SHA512 (org.eclipse.tycho-tycho-1.7.0.tar.xz) = 7a48b674b5cb997c60b27ccbb6022159731913f4918f23c2aea508be31f7955e42092478adfd076e40ddcef5ac188563bc43f1f80ba489b0493100e9fb629907
diff --git a/tycho-bootstrap.sh b/tycho-bootstrap.sh
index abad68d..6bbb0a4 100755
--- a/tycho-bootstrap.sh
+++ b/tycho-bootstrap.sh
@@ -63,7 +63,7 @@ done
 for proj in ${reactorprojs[@]} ; do
   isolateProject ${proj}
   xmvn -B -o -e -f "${proj}/pom.xml" -Dmaven.repo.local=$(pwd)/.m2 -Dmaven.test.skip=true \
-    -Dmaven.compiler.source=1.8 -Dmaven.compiler.target=1.8 -Dproject.build.sourceEncoding=UTF-8 \
+    -Dmaven.compiler.source=1.8 -Dmaven.compiler.target=1.8 -Dmaven.compiler.release=8 -Dproject.build.sourceEncoding=UTF-8 \
     clean install
   unifyProject ${proj}
 done
diff --git a/tycho-scripts.sh b/tycho-scripts.sh
index 25ed6af..de3bd06 100755
--- a/tycho-scripts.sh
+++ b/tycho-scripts.sh
@@ -26,7 +26,7 @@ if [ $# -gt 1 ]; then
   cp='-classpath '$2':'"${basedir}"'/target/externalDeps/*'
 fi
 
-javac -d "${basedir}/${output}" -encoding utf8 \
+javac -d "${basedir}/${output}" -encoding utf8 --release 8 \
   $(for file in `find "${basedir}/${src}" -name "*.java"`; \
     do echo -n "${file} "; \
   done;) \