diff --git a/.prettierignore b/.prettierignore
index 76d81d45a..cc0c2da47 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -4,6 +4,9 @@
 packages/agent-native/
 vendor/agent/
 vendor/jian/
+# Vendored fork of rust-skia — keep upstream Cargo.toml / .orig formatting
+# byte-identical so the diff against upstream stays minimal.
+vendor/skia-safe-op/
 
 # Rust build artifacts
 target/