diff --git a/gradlew b/gradlew
index 2d0bbb3a428..6c721242608 100755
--- a/gradlew
+++ b/gradlew
@@ -104,7 +104,7 @@ fi
 
 # LUCENE-9266: verify and download the gradle wrapper jar if we don't have one.
 GRADLE_WRAPPER_JAR=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
-if ! $JAVACMD buildSrc/src/main/java/org/apache/lucene/gradle/WrapperDownloader.java $GRADLE_WRAPPER_JAR ; then
+if ! $JAVACMD --source 11 buildSrc/src/main/java/org/apache/lucene/gradle/WrapperDownloader.java $GRADLE_WRAPPER_JAR ; then
     exit $?
 fi
 
diff --git a/gradlew.bat b/gradlew.bat
index 90faafb6b98..bb3f631d9ca 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -80,7 +80,7 @@ set CMD_LINE_ARGS=%*
 
 @rem LUCENE-9266: verify and download the gradle wrapper jar if we don't have one.
 set GRADLE_WRAPPER_JAR=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-"%JAVA_EXE%" buildSrc/src/main/java/org/apache/lucene/gradle/WrapperDownloader.java "%GRADLE_WRAPPER_JAR%"
+"%JAVA_EXE%" --source 11 buildSrc/src/main/java/org/apache/lucene/gradle/WrapperDownloader.java "%GRADLE_WRAPPER_JAR%"
 IF %ERRORLEVEL% NEQ 0 goto fail
 
 @rem Setup the command line