diff --git a/build.gradle b/build.gradle
index ba4adeb..a3d667c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -59,6 +59,7 @@ dependencies {
         exclude group: 'org.hamcrest', module: 'hamcrest-core'
     }
     testImplementation group: 'org.hamcrest', name: 'hamcrest-core', version: '2.2'
+    testImplementation 'junit:junit:4.13.1'
 }
 
 processResources {