diff --git a/client/build.gradle b/client/build.gradle
index 54acafec..efd95b09 100644
--- a/client/build.gradle
+++ b/client/build.gradle
@@ -42,8 +42,8 @@ dependencies {
     }
     testImplementation('commons-io:commons-io:2.21.0')
     testImplementation("org.mockito:mockito-core:5.+")
-    testImplementation('org.junit.jupiter:junit-jupiter-engine:5.13.4')
-    testImplementation('org.junit.jupiter:junit-jupiter-params:5.13.4')
+    testImplementation('org.junit.jupiter:junit-jupiter-engine:6.0.3')
+    testImplementation('org.junit.jupiter:junit-jupiter-params:6.0.3')
     testImplementation('org.apache.james:apache-mime4j:0.8.13') {
         exclude module: 'junit'
     }
diff --git a/server/manifestmergetool/build.gradle b/server/manifestmergetool/build.gradle
index a1b59672..714c4194 100644
--- a/server/manifestmergetool/build.gradle
+++ b/server/manifestmergetool/build.gradle
@@ -85,7 +85,7 @@ dependencies {
     testImplementation(platform('org.junit:junit-bom:6.0.1'))
     testRuntimeOnly('org.junit.platform:junit-platform-launcher')
     testImplementation('commons-io:commons-io:2.21.0')
-    testImplementation('org.junit.jupiter:junit-jupiter-engine:5.13.4')
+    testImplementation('org.junit.jupiter:junit-jupiter-engine:6.0.3')
 }
 
 allprojects {