diff --git a/chatformatter-core/build.gradle.kts b/chatformatter-core/build.gradle.kts
index 440eb02..6309d2e 100644
--- a/chatformatter-core/build.gradle.kts
+++ b/chatformatter-core/build.gradle.kts
@@ -40,8 +40,8 @@ dependencies {
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
     testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine")
 
-    testImplementation("org.mockito:mockito-core:5.20.0")
-    testImplementation("org.mockito:mockito-junit-jupiter:5.20.0")
+    testImplementation("org.mockito:mockito-core:5.21.0")
+    testImplementation("org.mockito:mockito-junit-jupiter:5.21.0")
     testImplementation("me.clip:placeholderapi:2.11.7")
     testImplementation("org.assertj:assertj-core:3.27.6")
 }