diff --git a/build/.gitignore b/build/.gitignore
index 3ee46f78e..47745bc1e 100644
--- a/build/.gitignore
+++ b/build/.gitignore
@@ -4,3 +4,4 @@ VC2015_32
 DF_PATH.txt
 _CPack_Packages
 *.tar.*
+.cmake