diff --git a/.github/workflows/source/doxygen b/.github/workflows/source/doxygen
index 31356442e80..0bff224d71c 100755
--- a/.github/workflows/source/doxygen
+++ b/.github/workflows/source/doxygen
@@ -12,4 +12,8 @@
 set -eu -o pipefail
 
 cd Docs
+
+# treat all warnings as errors
+echo "WARN_AS_ERROR = YES" >> Doxyfile
+
 doxygen