diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 000000000..24d7e0637
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,3 @@
+# Hide generated e2e artifacts from GitHub diffs by default.
+e2e/**/__cassettes__/** linguist-generated=true
+e2e/**/*.span-tree.json linguist-generated=true