diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..218c7a7
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,4 @@
+# Treat everything as binary so Git never rewrites line endings on Windows
+# checkout. Without this, autocrlf can mark tracked files "modified" and break
+# `git pull` / updates. PowerShell + Python both read LF fine.
+* -text