diff --git a/build.gradle b/build.gradle
index 6092b37..648cf13 100644
--- a/build.gradle
+++ b/build.gradle
@@ -17,7 +17,7 @@ dependencies {
     implementation 'org.json:json:20250107'
     implementation 'com.nimbusds:oauth2-oidc-sdk:11.23'
 
-    testImplementation 'org.mockito:mockito-core:4.9.0'
+    testImplementation 'org.mockito:mockito-core:5.18.0'
     testImplementation 'org.junit.jupiter:junit-jupiter-api:5.10.2'
     testImplementation 'ch.qos.logback:logback-classic:1.2.11'
     testImplementation "com.github.tomakehurst:wiremock-jre8-standalone:2.35.0"