diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index 20d967e..aa1fe3a 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -3,6 +3,9 @@
 
 name: .NET CI
 
+permissions:
+  contents: read
+
 on:
   push:
     branches: [ "master" ]