diff --git a/build.gradle b/build.gradle
index f768c309..92453128 100644
--- a/build.gradle
+++ b/build.gradle
@@ -91,7 +91,7 @@ dependencies {
 
     testImplementation("com.approvaltests:approvaltests:25.10.0")
 
-    def mockitoVersion = "5.20.0"
+    def mockitoVersion = "5.21.0"
     testImplementation("org.mockito:mockito-core:${mockitoVersion}")
     testImplementation("org.mockito:mockito-junit-jupiter:${mockitoVersion}")
     testImplementation('org.assertj:assertj-core:3.27.6')