diff --git a/lucene/tools/javadoc/ecj.javadocs.prefs b/lucene/tools/javadoc/ecj.javadocs.prefs
index 9fcbf88d578..975707055ff 100644
--- a/lucene/tools/javadoc/ecj.javadocs.prefs
+++ b/lucene/tools/javadoc/ecj.javadocs.prefs
@@ -5,8 +5,8 @@ org.eclipse.jdt.core.compiler.annotation.nonnullbydefault=org.eclipse.jdt.annota
 org.eclipse.jdt.core.compiler.annotation.nonnullisdefault=disabled
 org.eclipse.jdt.core.compiler.annotation.nullable=org.eclipse.jdt.annotation.Nullable
 org.eclipse.jdt.core.compiler.annotation.nullanalysis=disabled
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
-org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
+org.eclipse.jdt.core.compiler.compliance=11
 org.eclipse.jdt.core.compiler.doc.comment.support=enabled
 org.eclipse.jdt.core.compiler.problem.annotationSuperInterface=error
 org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
@@ -93,4 +93,4 @@ org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disa
 org.eclipse.jdt.core.compiler.problem.unusedPrivateMember=ignore
 org.eclipse.jdt.core.compiler.problem.unusedWarningToken=ignore
 org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=error
-org.eclipse.jdt.core.compiler.source=1.8
+org.eclipse.jdt.core.compiler.source=11