diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a98d7e032..54bc2afb6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,9 @@ env:
     LC_ALL: en_US.UTF-8
     LANG: en_US.UTF-8
 
+permissions:
+  contents: read # to fetch code (actions/checkout)
+
 jobs:
     linux:
         name: Linux (python=${{ matrix.pyver }} cc=${{ matrix.cc }} sanitize=${{ matrix.sanitize }})
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 7442be92b..14732684d 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -9,9 +9,16 @@ on:
   schedule:
     - cron: '0 22 * * 5'
 
+permissions:
+  contents: read # to fetch code (actions/checkout)
+
 jobs:
   CodeQL-Build:
 
+    permissions:
+      contents: read # to fetch code (actions/checkout)
+      security-events: write # to upload SARIF results (github/codeql-action/analyze)
+
     runs-on: ubuntu-latest
 
     steps: