diff --git a/trick_source/java/pom.xml b/trick_source/java/pom.xml
index cc740cd5..fa4e114a 100644
--- a/trick_source/java/pom.xml
+++ b/trick_source/java/pom.xml
@@ -14,8 +14,7 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <maven.compiler.source>${jdk.version}</maven.compiler.source>
-    <maven.compiler.target>${jdk.version}</maven.compiler.target>
+    <maven.compiler.release>8</maven.compiler.release>
   </properties>
 
   <dependencies>