diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index ae450b4..9a373b6 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -3,6 +3,9 @@ name: Check style + docs + types
 on:
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   check:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index 31e01ed..655967e 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -1,5 +1,9 @@
 name: unit tests
 
+permissions:
+  contents: read
+  id-token: write
+
 on:
   push:
     branches: