diff --git a/code-scanning/njsscan.yml b/code-scanning/njsscan.yml
index 8077f76..a6da087 100644
--- a/code-scanning/njsscan.yml
+++ b/code-scanning/njsscan.yml
@@ -17,8 +17,14 @@ on:
   schedule:
     - cron: $cron-weekly
 
+permissions:
+  contents: read
+
 jobs:
   njsscan:
+    permissions:
+      contents: read # for actions/checkout to fetch code
+      security-events: write # for github/codeql-action/upload-sarif to upload SARIF results
     runs-on: ubuntu-latest
     name: njsscan code scanning
     steps:
diff --git a/code-scanning/stackhawk.yml b/code-scanning/stackhawk.yml
index 9701b1f..af220c0 100644
--- a/code-scanning/stackhawk.yml
+++ b/code-scanning/stackhawk.yml
@@ -37,8 +37,14 @@ on:
   schedule:
     - cron: $cron-weekly
 
+permissions:
+  contents: read
+
 jobs:
   stackhawk:
+    permissions:
+      contents: read # for actions/checkout to fetch code
+      security-events: write # for stackhawk/hawkscan-action to upload code scanning alert info
     name: StackHawk
     runs-on: ubuntu-20.04
     steps: