diff --git a/.gitignore b/.gitignore
index d3b7ae1..d89d133 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 # dependencies
 /node_modules
+/.pnpm-store
 /.pnp
 .pnp.*
 .yarn/*
diff --git a/.prettierignore b/.prettierignore
index 84c830d..c3229f7 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -1,2 +1,7 @@
 # Machine-generated - pnpm owns this file's formatting, not prettier.
 pnpm-lock.yaml
+
+# pnpm's local content-addressable store - on some runners this ends up inside the workspace
+# instead of the global cache location; its blobs aren't source files (some happen to parse as
+# JS/TS-like content, which crashes prettier's parser rather than just wasting time on them).
+.pnpm-store/