diff --git a/README.md b/README.md
index 1167b4a..76499bf 100644
--- a/README.md
+++ b/README.md
@@ -114,6 +114,7 @@ build status
 ![Microcontrollers CI](https://github.com/folkertvanheusden/iESP/actions/workflows/platformio.yaml/badge.svg)
 ![MacOS X CI](https://github.com/folkertvanheusden/iESP/actions/workflows/macos.yaml/badge.svg)
 
+![CodeQL](https://github.com/folkertvanheusden/iESP/actions/workflows/CodeQL.yaml/badge.svg)
 ![Coverity](https://scan.coverity.com/projects/29725/badge.svg)