diff --git a/build.gradle b/build.gradle
index 3064166..c87e6ce 100644
--- a/build.gradle
+++ b/build.gradle
@@ -27,7 +27,7 @@ ext {
     version_junit = '5.7.0'
     version_junit_platform = '1.7.0'
     
-    lib_antlr = "org.antlr:antlr4:4.8-1"
+    lib_antlr = "org.antlr:antlr4:4.9"
     
     lib_commons_collections4 = 'org.apache.commons:commons-collections4:4.4'
     lib_commons_lang3 = 'org.apache.commons:commons-lang3:3.11'