diff --git a/flake.lock b/flake.lock
index 9fd3f5e..61c67f4 100644
--- a/flake.lock
+++ b/flake.lock
@@ -115,7 +115,8 @@
         "nixng": "nixng",
         "nixpkgs": "nixpkgs_2",
         "org-thtml": "org-thtml",
-        "web-mode": "web-mode"
+        "web-mode": "web-mode",
+        "yaml-mode": "yaml-mode"
       }
     },
     "web-mode": {
@@ -133,6 +134,22 @@
         "repo": "web-mode",
         "type": "github"
       }
+    },
+    "yaml-mode": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1641308620,
+        "narHash": "sha256-/0Gt2jqJljN5glxG7H0L3rZVRc34d9jCkoYALHDRt7w=",
+        "owner": "yoshiki",
+        "repo": "yaml-mode",
+        "rev": "a79d2a7b9281f8c56f461d717b1ba40fc58e22fd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "yoshiki",
+        "repo": "yaml-mode",
+        "type": "github"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index 74dac44..90dedfb 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,6 +7,7 @@
     modus-themes = { url = "github:protesilaos/modus-themes"; flake = false; };
     web-mode = { url = "github:fxbois/web-mode"; flake = false; };
     hcl-mode = { url = "github:purcell/emacs-hcl-mode"; flake = false; };
+    yaml-mode = { url = "github:yoshiki/yaml-mode"; flake = false; };
   };
 
   outputs = { self
@@ -17,6 +18,7 @@
             , modus-themes
             , web-mode
             , hcl-mode
+            , yaml-mode
             , ...
             }@inputs:
     let
@@ -40,6 +42,7 @@
               emacsclient -e $'(add-to-list \'load-path "${emacs-htmlize}")'
               emacsclient -e $'(add-to-list \'load-path "${web-mode}")'
               emacsclient -e $'(add-to-list \'load-path "${hcl-mode}")'
+              emacsclient -e $'(add-to-list \'load-path "${yaml-mode}")'
 
               emacsclient -e '(load-file "./make.el")'
               emacsclient -e '(magic_rb/publish-website "${which}")'
diff --git a/make.el b/make.el
index 690f20d..bc6278b 100644
--- a/make.el
+++ b/make.el
@@ -18,6 +18,7 @@
 
 (require 'web-mode)
 (require 'hcl-mode)
+(require 'yaml-mode)
 (ignore-errors (require 'ox-thtml))
 
 ;; https://alhassy.github.io/AlBasmala.html#Floating-TOC