diff --git a/.gitmodules b/.gitmodules
index 8ccf596..93de89e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -409,3 +409,6 @@
 [submodule "harmless"]
 	path = harmless
 	url = https://github.com/e4779/zola-harmless.git
+[submodule "avel"]
+	path = avel
+	url = https://github.com/kako-jun/avel.git
diff --git a/avel b/avel
new file mode 160000
index 0000000..08dfdfb
--- /dev/null
+++ b/avel
@@ -0,0 +1 @@
+Subproject commit 08dfdfbd1ae7455c06d1f7d51be5c4adf1358b11