diff --git a/pkgs/development/python-modules/mdformat-admon/default.nix b/pkgs/development/python-modules/mdformat-admon/default.nix
index e6b872417d3f..4870e256a3c6 100644
--- a/pkgs/development/python-modules/mdformat-admon/default.nix
+++ b/pkgs/development/python-modules/mdformat-admon/default.nix
@@ -11,7 +11,7 @@
 
 buildPythonPackage rec {
   pname = "mdformat-admon";
-  version = "2.0.6";
+  version = "2.1.1";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
@@ -20,7 +20,7 @@ buildPythonPackage rec {
     owner = "KyleKing";
     repo = "mdformat-admon";
     tag = "v${version}";
-    hash = "sha256-YyEiqry1dAm/2EEuQjPFEfdpLI+NiLhVcyx4jAyXs4E=";
+    hash = "sha256-y0TNyje2OXBY4oo9kBePlqSZAU36vbQQKZUPm/u6DAc=";
   };
 
   nativeBuildInputs = [ flit-core ];
diff --git a/pkgs/development/python-modules/mdformat-gfm-alerts/default.nix b/pkgs/development/python-modules/mdformat-gfm-alerts/default.nix
index 611adff811a9..14852b7de2f2 100644
--- a/pkgs/development/python-modules/mdformat-gfm-alerts/default.nix
+++ b/pkgs/development/python-modules/mdformat-gfm-alerts/default.nix
@@ -37,5 +37,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/KyleKing/mdformat-gfm-alerts/releases/tag/v${version}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ sigmanificient ];
+    broken = true; # broken test due to changes in mdformat; compare https://github.com/KyleKing/mdformat-admon/issues/25
   };
 }
diff --git a/pkgs/development/python-modules/mdformat-mkdocs/default.nix b/pkgs/development/python-modules/mdformat-mkdocs/default.nix
index a6f980d4f05c..b48f9abb3a37 100644
--- a/pkgs/development/python-modules/mdformat-mkdocs/default.nix
+++ b/pkgs/development/python-modules/mdformat-mkdocs/default.nix
@@ -4,7 +4,6 @@
   fetchFromGitHub,
   flit-core,
   mdformat,
-  mdformat-admon,
   mdformat-gfm,
   mdit-py-plugins,
   more-itertools,
@@ -31,7 +30,6 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [
     mdformat
-    mdformat-admon
     mdformat-gfm
     mdit-py-plugins
     more-itertools
diff --git a/pkgs/development/python-modules/mdformat-toc/default.nix b/pkgs/development/python-modules/mdformat-toc/default.nix
index 3d4c3fe42d0f..325c85a67c29 100644
--- a/pkgs/development/python-modules/mdformat-toc/default.nix
+++ b/pkgs/development/python-modules/mdformat-toc/default.nix
@@ -38,5 +38,6 @@ buildPythonPackage rec {
       aldoborrero
       polarmutex
     ];
+    broken = true; # broken test due to changes in mdformat; compare https://github.com/KyleKing/mdformat-admon/issues/25
   };
 }
diff --git a/pkgs/development/python-modules/mdformat/default.nix b/pkgs/development/python-modules/mdformat/default.nix
index 9d67bc59c6a9..393d877370c2 100644
--- a/pkgs/development/python-modules/mdformat/default.nix
+++ b/pkgs/development/python-modules/mdformat/default.nix
@@ -12,7 +12,7 @@
 
 buildPythonPackage rec {
   pname = "mdformat";
-  version = "0.7.19";
+  version = "0.7.22";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     owner = "executablebooks";
     repo = "mdformat";
     tag = version;
-    hash = "sha256-t2yx8cIq8es3XOc2nbHPKjUUium5+RPZuD8oNWZxVV0=";
+    hash = "sha256-WvbGCqfzh7KlNXIGJq09goiyLzVgU7c1+qmsLrIW38k=";
   };
 
   build-system = [ setuptools ];