diff --git a/function-apps/Append-Transaction/pom.xml b/function-apps/Append-Transaction/pom.xml
index 8db9ec1..c06f37b 100644
--- a/function-apps/Append-Transaction/pom.xml
+++ b/function-apps/Append-Transaction/pom.xml
@@ -71,7 +71,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>