diff --git a/.gitignore b/.gitignore
index 4592f603e060ac..c5ae6ea68d82fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -93,6 +93,9 @@ _UpgradeReport_Files/
 /*.host.mk
 /deps/openssl/openssl.target.mk
 /deps/zlib/zlib.target.mk
+# generated by MSVC with /P enabled
+tools/*/*.i
+tools/*/*.i.tmp
 
 # === Rules for release artifacts ===
 /*.tar.*