diff --git a/.gitmodules b/.gitmodules
index 30cdfd8..657f45d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -34,3 +34,6 @@
 [submodule "vim/bundle/syntastic"]
 	path = vim/bundle/syntastic
 	url = https://github.com/scrooloose/syntastic.git
+[submodule "vim/bundle/instant-markdown"]
+	path = vim/bundle/instant-markdown
+	url = https://github.com/suan/vim-instant-markdown.git
diff --git a/vim/bundle/instant-markdown b/vim/bundle/instant-markdown
new file mode 160000
index 0000000..5442103
--- /dev/null
+++ b/vim/bundle/instant-markdown
@@ -0,0 +1 @@
+Subproject commit 54421032cb7b21faf8be8e139f8d83c7fee16080