diff --git a/pkgs/development/libraries/cmark-gfm/default.nix b/pkgs/development/libraries/cmark-gfm/default.nix
index 8c24853e4b0..650913fc388 100644
--- a/pkgs/development/libraries/cmark-gfm/default.nix
+++ b/pkgs/development/libraries/cmark-gfm/default.nix
@@ -1,13 +1,13 @@
 { lib, stdenv, fetchFromGitHub, cmake }:
 stdenv.mkDerivation rec {
   pname = "cmark-gfm";
-  version = "0.29.0.gfm.12";
+  version = "0.29.0.gfm.13";
 
   src = fetchFromGitHub {
     owner = "github";
     repo = "cmark-gfm";
     rev = version;
-    sha256 = "sha256-C/aqoifxKWj+VXdsnNTHuAR/cFns0kGpSLstZ/6XPqU=";
+    sha256 = "sha256-HiSGtRsSbW03R6aKoMVVFOLrwP5aXtpeXUC/bE5M/qo=";
   };
 
   nativeBuildInputs = [ cmake ];