diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 8012e3930..22cc4c95c 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -1,6 +1,9 @@
 name: Docker
 on: [pull_request]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 6e3381aff..07476e764 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,6 +7,9 @@ on:
     branches-ignore:
       - i18n_master
 
+permissions:
+  contents: read
+
 jobs:
   tests:
     runs-on: ubuntu-18.04
@@ -60,6 +63,8 @@ jobs:
           name: screenshots
           path: tmp/screenshots
   coveralls:
+    permissions:
+      contents: none
     runs-on: ubuntu-18.04
     needs: tests
     env: