diff --git a/tools/llvm-upgrade/.cvsignore b/tools/llvm-upgrade/.cvsignore
new file mode 100644
index 00000000000..d20866ee98c
--- /dev/null
+++ b/tools/llvm-upgrade/.cvsignore
@@ -0,0 +1,4 @@
+UpgradeParser.output
+UpgradeLexer.cpp
+UpgradeParser.cpp
+UpgradeParser.h