diff --git a/.hgignore b/.hgignore
index 91f02fd2a31..c67ffb8cbc6 100644
--- a/.hgignore
+++ b/.hgignore
@@ -80,6 +80,8 @@ PCbuild/*.suo
 PCbuild/*.*sdf
 PCbuild/Win32-temp-*
 PCbuild/x64-temp-*
+PCbuild/*-pgi
+PCbuild/*-pgo
 PCbuild/amd64
 PCbuild/ipch
 Tools/unicode/build/