diff --git a/.hgignore b/.hgignore
index 81941b2351f..dd4e9bba052 100644
--- a/.hgignore
+++ b/.hgignore
@@ -33,6 +33,7 @@ Modules/config.c
 Modules/ld_so_aix$
 Parser/pgen$
 Parser/pgen.stamp$
+PCbuild/amd64/
 ^core
 ^python-gdb.py
 ^python.exe-gdb.py