diff --git a/.github/workflows/cron-conda.yml b/.github/workflows/cron-conda.yml
index 0f75fcff49..be42b7b45d 100644
--- a/.github/workflows/cron-conda.yml
+++ b/.github/workflows/cron-conda.yml
@@ -6,6 +6,9 @@ on:
   push:
     branches: [main, ]
 
+permissions:
+  contents: read
+
 jobs:
   unit-tests:
     name: Unit Tests