diff --git a/Dockerfile b/Dockerfile
index beeb618..c5767f7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -72,7 +72,7 @@ RUN mkdir -p "$CATALINA_HOME"
 #     done
 
 ENV TOMCAT_MAJOR 8
-ENV TOMCAT_VERSION 8.0.37
+ENV TOMCAT_VERSION 8.0.39
 ENV TOMCAT_TGZ_URL https://www.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz
 
 WORKDIR $CATALINA_HOME