diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index d8a2c7675..f80d3cf49 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -13,6 +13,11 @@ on:
   pull_request:
     branches: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   test:
+    permissions:
+      contents: none
     uses: fog/.github/.github/workflows/ruby.yml@v1.1.0
diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index 95e65f9c1..a1122a2aa 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -4,6 +4,11 @@ on:
   schedule:
   - cron: "30 1 * * *"
 
+permissions:
+  contents: read
+
 jobs:
   stale:
+    permissions:
+      contents: none
     uses: fog/.github/.github/workflows/stale.yml@v1.1.0