diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 66e189d245..3e37ab199b 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -7,6 +7,9 @@ on:
     branches:
       - main
 
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   analyze:
     name: Analyze