diff --git a/build.gradle b/build.gradle
index b83d9e47..e37dcff9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -52,7 +52,7 @@ dependencies {
     implementation "org.antlr:antlr4-intellij-adaptor:0.1"
     implementation group: 'org.jfree', name: 'org.jfree.svg', version: '5.0.7'
     testImplementation group: 'junit', name: 'junit', version: '4.13.2'
-    testImplementation group: 'org.mockito', name: 'mockito-core', version: '5.20.0'
+    testImplementation group: 'org.mockito', name: 'mockito-core', version: '5.21.0'
 }
 
 generateGrammarSource {