diff --git a/.gitmodules b/.gitmodules
index c3cd7db..0e2e208 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,9 @@
 [submodule "abolish"]
 	path = pack/5_dev/start/abolish
 	url = https://github.com/tpope/vim-abolish.git
+[submodule "ALE"]
+	path = pack/5_dev/opt/ale
+	url = https://github.com/dense-analysis/ale.git
 [submodule "asterisk"]
 	path = pack/3_extra/start/asterisk
 	url = https://github.com/haya14busa/vim-asterisk.git
diff --git a/pack/5_dev/opt/ale b/pack/5_dev/opt/ale
new file mode 160000
index 0000000..560e634
--- /dev/null
+++ b/pack/5_dev/opt/ale
@@ -0,0 +1 @@
+Subproject commit 560e6340ce10ce90fac587096fb147eea43e624d
diff --git a/vimrc b/vimrc
index 9ac1d20..b0da0de 100644
--- a/vimrc
+++ b/vimrc
@@ -602,6 +602,15 @@ autocmd FileType cpp setlocal comments^=:/// foldmethod=syntax foldlevel=0
 " abolish-coercion
 " camelCase MixedCase _snake_case UPPERCASE -dash-case dot.case space Title
 
+"" ALE		{{{2
+""
+"" Optional: Asynchronous Lint Engine
+
+packadd! ale
+let g:ale_linters = {'sh': ['shellcheck']}
+let g:ale_linters_explicit=1
+
+
 "" Commentary	{{{2
 ""