diff --git a/build.gradle b/build.gradle
index 3a16ebf..a549f71 100644
--- a/build.gradle
+++ b/build.gradle
@@ -15,7 +15,7 @@ dependencies {
     compile 'org.apache.velocity:velocity:1.7'
     compile 'info.picocli:picocli:3.6.1'
     compile 'org.slf4j:slf4j-api:1.7.26'
-    compile 'org.slf4j:slf4j-simple:1.7.26'
+    compile 'org.slf4j:slf4j-simple:1.7.31'
     compile 'org.yaml:snakeyaml:1.24'
 
     testCompile 'junit:junit:4.12'