diff --git a/build.gradle b/build.gradle
index 6ca5309..58e37c2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -26,7 +26,7 @@ dependencies {
     //testCompile 'de.inetsoftware:jwebassembly-api:+'
     testImplementation 'com.github.i-net-software:jwebassembly-api:master-SNAPSHOT'
     testImplementation 'junit:junit:+'
-    testImplementation 'org.mockito:mockito-core:+'
+    testImplementation 'org.mockito:mockito-core:4.+'
     testImplementation 'org.apache.commons:commons-compress:1.2'
     testImplementation 'com.google.code.gson:gson:+'
 }