diff --git a/.gitmodules b/.gitmodules
index af52750..5313fa2 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -135,3 +135,6 @@
 [submodule ".vim/pack/alpha/start/vim-nix"]
 	path = .vim/pack/alpha/start/vim-nix
 	url = https://github.com/LnL7/vim-nix.git
+[submodule ".vim/pack/alpha/start/riv.vim"]
+	path = .vim/pack/alpha/start/riv.vim
+	url = https://github.com/gu-fan/riv.vim
diff --git a/.vim/pack/alpha/start/riv.vim b/.vim/pack/alpha/start/riv.vim
new file mode 160000
index 0000000..201ffc4
--- /dev/null
+++ b/.vim/pack/alpha/start/riv.vim
@@ -0,0 +1 @@
+Subproject commit 201ffc4e8dbfc3deeb26c6e278980f53d81d7f6a