Add dependency to slf4j-simple for test scope
diff --git a/pom.xml b/pom.xml
index b3591d6..140f7fe 100644
--- a/pom.xml
+++ b/pom.xml
@@ -167,6 +167,12 @@
       <version>1.6.3</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-simple</artifactId>
+      <version>1.7.36</version>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <build>