diff --git a/composer.lock b/composer.lock
index 48ac3f1..d65bac9 100644
--- a/composer.lock
+++ b/composer.lock
@@ -210,20 +210,20 @@
         },
         {
             "name": "pressbooks/mix",
-            "version": "2.1",
+            "version": "2.1.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/pressbooks/mix.git",
-                "reference": "4cb5d44244468480c24f30ea08070b37711ba864"
+                "reference": "452955abf7334d2e054cf8d33236adf21c4c9961"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/pressbooks/mix/zipball/4cb5d44244468480c24f30ea08070b37711ba864",
-                "reference": "4cb5d44244468480c24f30ea08070b37711ba864",
+                "url": "https://api.github.com/repos/pressbooks/mix/zipball/452955abf7334d2e054cf8d33236adf21c4c9961",
+                "reference": "452955abf7334d2e054cf8d33236adf21c4c9961",
                 "shasum": ""
             },
             "require-dev": {
-                "humanmade/coding-standards": "^0.2.1"
+                "pressbooks/coding-standards": "^1.1"
             },
             "type": "library",
             "autoload": {
@@ -241,7 +241,11 @@
                     "email": "code@pressbooks.com"
                 }
             ],
-            "time": "2017-09-06T21:35:04+00:00"
+            "support": {
+                "issues": "https://github.com/pressbooks/mix/issues",
+                "source": "https://github.com/pressbooks/mix/tree/2.1.1"
+            },
+            "time": "2022-05-03T15:44:17+00:00"
         },
         {
             "name": "spatie/color",