diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1a317f267..956f81684 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,6 +4,8 @@ on:
   pull_request:
   push:
 
+permissions: read-all
+
 jobs:
 
   tests:
diff --git a/.github/workflows/hydra_status.yml b/.github/workflows/hydra_status.yml
index d85999256..7766e4f8e 100644
--- a/.github/workflows/hydra_status.yml
+++ b/.github/workflows/hydra_status.yml
@@ -1,4 +1,7 @@
 name: Hydra status
+
+permissions: read-all
+
 on:
   schedule:
     - cron: "12,42 * * * *"