diff --git a/flake.lock b/flake.lock
index 2ce4242a..61540b7e 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,15 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1668650906,
-        "narHash": "sha256-JuiYfDO23O8oxUUOmhQflmOoJovyC5G4RjcYQMQjrRE=",
+        "lastModified": 1687130670,
+        "narHash": "sha256-VKTdfsJe7sVTTqxTd3eRGPoUgEeJKD+kwS86B6TY874=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3a86856a13c88c8c64ea32082a851fefc79aa700",
+        "rev": "c1bca7fe84c646cfd4ebf3482c0e6317a0b13f22",
         "type": "github"
       },
       "original": {
         "id": "nixpkgs",
+        "rev": "c1bca7fe84c646cfd4ebf3482c0e6317a0b13f22",
         "type": "indirect"
       }
     },
diff --git a/flake.nix b/flake.nix
index 3ce6db13..c571bc5e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,6 +2,9 @@
   # WARNING this is very much still experimental.
   description = "A collection of darwin modules";
 
+  # Temporary pin for Markdown documentation transition.
+  inputs.nixpkgs.url = "nixpkgs/c1bca7fe84c646cfd4ebf3482c0e6317a0b13f22";
+
   outputs = { self, nixpkgs }: {
     lib = {
       # TODO handle multiple architectures.