diff --git a/pom.xml b/pom.xml
index d970f23f38..adea2d3689 100644
--- a/pom.xml
+++ b/pom.xml
@@ -153,7 +153,7 @@
 		<powermock.version>1.6.5</powermock.version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<slf4j.version>1.7.21</slf4j.version>
+		<slf4j.version>1.7.34</slf4j.version>
 		<verify.mutationThreshold>100</verify.mutationThreshold>
 		<verify.totalBranchRate>100</verify.totalBranchRate>
 		<verify.totalLineRate>100</verify.totalLineRate>
@@ -789,7 +789,7 @@
 							<phase>test-compile</phase>
 							<configuration>
 								<rules>
-									<NoPackageCyclesRule implementation="de.andrena.tools.nopackagecycles.NoPackageCyclesRule" />
+									<NoPackageCyclesRule implementation="de.andrena.tools.nopackagecycles.NoPackageCyclesRule"/>
 								</rules>
 							</configuration>
 						</execution>