diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 2318ca6..1e3dd8e 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -1,5 +1,8 @@
 name: Tests and build
 
+permissions:
+  contents: read
+
 on:
   push:
     branches: [main]