diff --git a/packages/pretty-format/.npmignore b/packages/pretty-format/.npmignore
index 3ee5d55b0b89..b11975bef5ac 100644
--- a/packages/pretty-format/.npmignore
+++ b/packages/pretty-format/.npmignore
@@ -1,5 +1,6 @@
 **/__mocks__/**
 **/__tests__/**
 src
+perf
 tsconfig.json
 tsconfig.tsbuildinfo