Add CodeQL badge
diff --git a/README.md b/README.md
index 2063a06..d8f0c8c 100644
--- a/README.md
+++ b/README.md
@@ -19,3 +19,4 @@
 [![Java CI Status](https://github.com/apache/commons-ognl/workflows/Java%20CI/badge.svg)](https://github.com/apache/commons-ognl/actions?query=workflow%3A%22Java+CI%22)
 [![Travis Status](https://travis-ci.com/apache/commons-ognl.svg?branch=master)](https://travis-ci.com/apache/commons-ognl)
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/org.apache.commons/commons-ognl/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.apache.commons/commons-ognl)
+[![CodeQL](https://github.com/apache/commons-ognl/workflows/CodeQL/badge.svg)](https://github.com/apache/commons-ognl/actions/workflows/codeql-analysis.yml?query=workflow%3ACodeQL)