diff --git a/pom.xml b/pom.xml
index 40121cd..557f61d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -115,7 +115,7 @@
         <junit.version>4.12</junit.version>
         <hamcrest-library.version>1.3</hamcrest-library.version>
         <slf4j-api.version>1.7.13</slf4j-api.version>
-        <slf4j-log4j12.version>1.7.13</slf4j-log4j12.version>
+        <slf4j-log4j12.version>1.7.26</slf4j-log4j12.version>
         <graphviz-java.version>0.11.2</graphviz-java.version>
         <guice.version>4.2.2</guice.version>
         <json.version>20180130</json.version>