diff --git a/.github/workflows/check-dist.yml b/.github/workflows/check-dist.yml
index 48dd78c..66bc632 100644
--- a/.github/workflows/check-dist.yml
+++ b/.github/workflows/check-dist.yml
@@ -16,6 +16,9 @@ on:
       - '**.md'
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   check-dist:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index da08436..0737399 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,6 +10,9 @@ on:
     paths-ignore:
       - '**.md'
 
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index b040ff7..47238be 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        language: [ 'javascript-typescript', 'actions' ]
+        language: [ 'javascript-typescript', 'actions', 'ruby' ]
 
     steps:
     - name: Checkout repository