diff --git a/cert-mgr/build.gradle b/cert-mgr/build.gradle
index 75bdf9c..7981263 100644
--- a/cert-mgr/build.gradle
+++ b/cert-mgr/build.gradle
@@ -39,7 +39,7 @@ configurations {
     compile.extendsFrom(provided)
 }
 
-def log4j_version="2.15.0"
+def log4j_version="2.16.0"
 List logger = [
         "org.apache.logging.log4j:log4j-api:$log4j_version",
         "org.apache.logging.log4j:log4j-to-slf4j:$log4j_version",