diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index c79944f8..7832e28b 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -3,9 +3,17 @@ name: "CodeQL"
 on:
   push:
     branches: [ 'master' ]
+    paths:
+      - '**.c'
+      - '**.cpp'
+      - '**.h'
   pull_request:
     # The branches below must be a subset of the branches above.
     branches: [ 'master' ]
+    paths:
+      - '**.c'
+      - '**.cpp'
+      - '**.h'
   schedule:
     - cron: '33 7 * * 6'