diff --git a/hachi-antlr/build.gradle b/hachi-antlr/build.gradle
index e64abf6..69c9ea2 100644
--- a/hachi-antlr/build.gradle
+++ b/hachi-antlr/build.gradle
@@ -2,7 +2,7 @@ apply plugin: 'java'
 apply plugin: 'antlr'
 
 dependencies {
-    antlr 'org.antlr:antlr4:4.9.2'
+    antlr 'org.antlr:antlr4:4.12.0'
     testImplementation 'junit:junit:4.13.2'
 }