diff --git a/build.gradle b/build.gradle
index 774aa277a8c..2d403a1c44b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -123,7 +123,7 @@ dependencies {
     antlr3 'org.antlr:antlr:3.5.2'
     implementation 'org.antlr:antlr-runtime:3.5.2'
 
-    antlr4 'org.antlr:antlr4:4.9'
+    antlr4 'org.antlr:antlr4:4.9.1'
     implementation 'org.antlr:antlr4-runtime:4.9.1'
 
     implementation (group: 'org.apache.lucene', name: 'lucene-queryparser', version: '8.7.0') {