diff --git a/flake.lock b/flake.lock
index f0efb4036ef..03e87f826e5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,5 +1,21 @@
 {
   "nodes": {
+    "cmark": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1706295831,
+        "narHash": "sha256-nEI85W8w49ZVr17ycO+7aZvcgA3U2QphNZGrfQl2mSk=",
+        "owner": "commonmark",
+        "repo": "cmark",
+        "rev": "cd37711b8a08da67ba4e21a42614b86dd8def929",
+        "type": "github"
+      },
+      "original": {
+        "owner": "commonmark",
+        "repo": "cmark",
+        "type": "github"
+      }
+    },
     "flake-compat": {
       "flake": false,
       "locked": {
@@ -66,6 +82,7 @@
     },
     "root": {
       "inputs": {
+        "cmark": "cmark",
         "flake-compat": "flake-compat",
         "libgit2": "libgit2",
         "nixpkgs": "nixpkgs",
diff --git a/flake.nix b/flake.nix
index 5179886c157..f22cdc28360 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,8 +5,10 @@
   inputs.nixpkgs-regression.url = "github:NixOS/nixpkgs/215d4d0fd80ca5163643b03a33fde804a29cc1e2";
   inputs.flake-compat = { url = "github:edolstra/flake-compat"; flake = false; };
   inputs.libgit2 = { url = "github:libgit2/libgit2"; flake = false; };
+  # Until https://github.com/commonmark/cmark/pull/524 is released
+  inputs.cmark = { url = "github:commonmark/cmark"; flake = false; };
 
-  outputs = { self, nixpkgs, nixpkgs-regression, libgit2, ... }:
+  outputs = { self, nixpkgs, nixpkgs-regression, libgit2, cmark, ... }:
 
     let
       inherit (nixpkgs) lib;
@@ -152,6 +154,11 @@
             '';
           };
 
+          cmark-nix = final.cmark.overrideAttrs (_: {
+            src = cmark;
+            version = cmark.lastModifiedDate;
+          });
+
           libgit2-nix = final.libgit2.overrideAttrs (attrs: {
             src = libgit2;
             version = libgit2.lastModifiedDate;
@@ -188,6 +195,7 @@
                 ;
               officialRelease = false;
               boehmgc = final.boehmgc-nix;
+              cmark = final.cmark-nix;
               libgit2 = final.libgit2-nix;
               busybox-sandbox-shell = final.busybox-sandbox-shell or final.default-busybox-sandbox-shell;
               changelog-d = final.changelog-d-nix;