diff --git a/.github/workflows/build_nightly.yml b/.github/workflows/build_nightly.yml
index 08536becb4..14bc2cb9c5 100644
--- a/.github/workflows/build_nightly.yml
+++ b/.github/workflows/build_nightly.yml
@@ -4,6 +4,10 @@ on:
     - cron: 0 0 * * *
 env:
   CACHE_VERSION: xxxxx1
+
+permissions:
+  contents: read
+
 jobs:
   build:
     uses: "./.github/workflows/build_and_test.yml"
diff --git a/.github/workflows/build_pull_request.yml b/.github/workflows/build_pull_request.yml
index af552ea077..c01f7568b5 100644
--- a/.github/workflows/build_pull_request.yml
+++ b/.github/workflows/build_pull_request.yml
@@ -6,6 +6,10 @@ on:
     - stable
 env:
   CACHE_VERSION: xxxxx1
+
+permissions:
+  contents: read
+
 jobs:
   build:
     uses: "./.github/workflows/build_and_test.yml"
diff --git a/.github/workflows/build_push.yml b/.github/workflows/build_push.yml
index 3c44cb8434..6ab895134f 100644
--- a/.github/workflows/build_push.yml
+++ b/.github/workflows/build_push.yml
@@ -6,6 +6,10 @@ on:
     - stable
 env:
   CACHE_VERSION: xxxxx1
+
+permissions:
+  contents: read
+
 jobs:
   build:
     uses: "./.github/workflows/build_and_test.yml"