diff --git a/.gitattributes b/.gitattributes
index 74055c82..a06fcb36 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1 +1,5 @@
uv.lock linguist-generated=true
+
+# Snapshot test artifacts generated by test/test_snapshot.py
+test/testdata/*.html linguist-generated=true
+test/testdata/*.txt linguist-generated=true