diff --git a/app/build.gradle b/app/build.gradle
index 611001d..6b3d294 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -30,7 +30,7 @@ dependencies {
     testImplementation 'org.junit.jupiter:junit-jupiter:5.10.0' 
     testImplementation 'org.scalatest:scalatest_2.13:3.3.0-SNAP4'
     testImplementation 'org.scalatestplus:junit-4-13_2.13:3.3.0.0-SNAP3'
-    testImplementation("com.approvaltests:approvaltests:20.0.0")
+    testImplementation("com.approvaltests:approvaltests:21.0.0")
     testImplementation("com.google.code.gson:gson:2.10.1") 
     
     // Need scala-xml at test runtime