diff --git a/pkgs/development/python-modules/elkm1-lib/default.nix b/pkgs/development/python-modules/elkm1-lib/default.nix
index 534a32540290..6e3e88010f71 100644
--- a/pkgs/development/python-modules/elkm1-lib/default.nix
+++ b/pkgs/development/python-modules/elkm1-lib/default.nix
@@ -4,7 +4,7 @@
 , fetchFromGitHub
 , fetchpatch
 , poetry-core
-, pyserial-asyncio
+, pyserial-asyncio-fast
 , pytest-asyncio
 , pytestCheckHook
 , pythonOlder
@@ -12,16 +12,16 @@
 
 buildPythonPackage rec {
   pname = "elkm1-lib";
-  version = "2.2.6";
+  version = "2.2.7";
   pyproject = true;
 
-  disabled = pythonOlder "3.9";
+  disabled = pythonOlder "3.11";
 
   src = fetchFromGitHub {
     owner = "gwww";
     repo = "elkm1";
     rev = "refs/tags/${version}";
-    hash = "sha256-5Jmn/ywyg6fmp0ZxPf79ET+JWPF4VjDJMwj/qU6ckS0=";
+    hash = "sha256-5YdmZO/8HimQ9Ft/K/I6xu0Av2SjUBp3+poBe7aVUpM=";
   };
 
   build-system = [
@@ -30,7 +30,7 @@ buildPythonPackage rec {
 
   dependencies = [
     async-timeout
-    pyserial-asyncio
+    pyserial-asyncio-fast
   ];
 
   nativeCheckInputs = [