diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..70dafc5
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+# Normalize line endings to LF in the repository; check out as-is on all platforms.
+* text=auto eol=lf
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e18eb10..617a969 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,6 +7,9 @@ on:
     branches: [main]
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest