diff --git a/build.gradle b/build.gradle
index 3f958cafd8a..53db391735e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -81,8 +81,8 @@ subprojects {
 
     [compileJava, compileTestJava]*.options*.compilerArgs = ["-Xlint:none", "-nowarn"]
 
-    sourceCompatibility = 1.11
-    targetCompatibility = 1.11
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
 
     test {
         maxParallelForks = 1