diff --git a/.gitmodules b/.gitmodules
index 6c2b3fa..ff4b91f 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -76,3 +76,6 @@
 [submodule "vim/bundle/grep"]
 	path = vim/bundle/grep
 	url = https://github.com/yegappan/grep.git
+[submodule "vim/bundle/vim-neco-calc"]
+	path = vim/bundle/vim-neco-calc
+	url = https://github.com/hrsh7th/vim-neco-calc.git