diff --git a/build.gradle b/build.gradle
index a4a705e..d081b46 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,7 +14,7 @@ repositories {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
+    testImplementation 'junit:junit:4.13.1'
 
     implementation 'com.nexmo:client:5.6.0'
     implementation "com.sparkjava:spark-core:2.6.0"