diff --git a/pom.xml b/pom.xml
index b97fe99..70f7415 100644
--- a/pom.xml
+++ b/pom.xml
@@ -312,7 +312,7 @@
         <spring.version>5.1.9.RELEASE</spring.version>
         <ehcache.version>2.6.11</ehcache.version>
         <clover.version>3.0.2</clover.version>
-        <slf4j.version>1.7.27</slf4j.version>
+        <slf4j.version>1.7.28</slf4j.version>
         <jackson.version>2.9.9.3</jackson.version>
     </properties>
 </project>