diff --git a/pkgs/development/python-modules/comicon/default.nix b/pkgs/development/python-modules/comicon/default.nix
index 8d69ae0fc744..04382d3ee340 100644
--- a/pkgs/development/python-modules/comicon/default.nix
+++ b/pkgs/development/python-modules/comicon/default.nix
@@ -2,6 +2,7 @@
 , buildPythonPackage
 , fetchFromGitHub
 , poetry-core
+, pythonRelaxDepsHook
 , ebooklib
 , lxml
 , pillow
@@ -10,18 +11,24 @@
 
 buildPythonPackage rec {
   pname = "comicon";
-  version = "1.0.0";
-  format = "pyproject";
+  version = "1.0.1";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "potatoeggy";
     repo = "comicon";
     rev = "v${version}";
-    hash = "sha256-D6nK+GlcG/XqMTH7h7mJcbZCRG2xDHRsnooSTtphDNs=";
+    hash = "sha256-e9YEr8IwttMlj6FOxk+/kw79qiF1N8/e2qusfw3WH00=";
   };
 
   nativeBuildInputs = [
     poetry-core
+    pythonRelaxDepsHook
+  ];
+
+  pythonRelaxDeps = [
+    "lxml"
+    "pillow"
   ];
 
   propagatedBuildInputs = [
@@ -34,6 +41,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "comicon" ];
 
   meta = with lib; {
+    changelog = "https://github.com/potatoeggy/comicon/releases/tag/v${version}";
     description = "Lightweight comic converter library between CBZ, PDF, and EPUB";
     homepage = "https://github.com/potatoeggy/comicon";
     license = licenses.agpl3Only;
diff --git a/pkgs/development/python-modules/mandown/default.nix b/pkgs/development/python-modules/mandown/default.nix
index 51d7db72259b..eae43bc8d951 100644
--- a/pkgs/development/python-modules/mandown/default.nix
+++ b/pkgs/development/python-modules/mandown/default.nix
@@ -2,6 +2,7 @@
 , buildPythonPackage
 , fetchFromGitHub
 , poetry-core
+, pythonRelaxDepsHook
 , beautifulsoup4
 , comicon
 , feedparser
@@ -18,7 +19,7 @@
 buildPythonPackage rec {
   pname = "mandown";
   version = "1.7.0";
-  format = "pyproject";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "potatoeggy";
@@ -29,6 +30,12 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [
     poetry-core
+    pythonRelaxDepsHook
+  ];
+
+  pythonRelaxDeps = [
+    "pillow"
+    "typer"
   ];
 
   propagatedBuildInputs = [
@@ -50,13 +57,10 @@ buildPythonPackage rec {
     ];
   };
 
-  postPatch = ''
-    substituteInPlace pyproject.toml --replace 'typer = "^0.7.0"' 'typer = "^0"'
-  '';
-
   pythonImportsCheck = [ "mandown" ];
 
   meta = with lib; {
+    changelog = "https://github.com/potatoeggy/mandown/releases/tag/v${version}";
     description = "Comic/manga/webtoon downloader and CBZ/EPUB/MOBI/PDF converter";
     homepage = "https://github.com/potatoeggy/mandown";
     license = licenses.agpl3Only;