diff --git a/pkgs/development/python-modules/pymodbus/default.nix b/pkgs/development/python-modules/pymodbus/default.nix
index c9e974b574ca..e7b61578331c 100644
--- a/pkgs/development/python-modules/pymodbus/default.nix
+++ b/pkgs/development/python-modules/pymodbus/default.nix
@@ -21,7 +21,7 @@
 
 buildPythonPackage rec {
   pname = "pymodbus";
-  version = "3.8.3";
+  version = "3.8.6";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -30,7 +30,7 @@ buildPythonPackage rec {
     owner = "pymodbus-dev";
     repo = "pymodbus";
     tag = "v${version}";
-    hash = "sha256-0jS18oCVX+WvGvaIlug3Wbf4oJUmspGYlcmJQR0MXhI=";
+    hash = "sha256-AnFPrjY6ukONAeCyHIzhtULm0vNjJugIxtuwACClzOo=";
   };
 
   build-system = [ setuptools ];
diff --git a/pkgs/servers/home-assistant/custom-components/solax_modbus/package.nix b/pkgs/servers/home-assistant/custom-components/solax_modbus/package.nix
index 504e8d81ea2d..ecd1053daa5a 100644
--- a/pkgs/servers/home-assistant/custom-components/solax_modbus/package.nix
+++ b/pkgs/servers/home-assistant/custom-components/solax_modbus/package.nix
@@ -8,13 +8,13 @@
 buildHomeAssistantComponent rec {
   owner = "wills106";
   domain = "solax_modbus";
-  version = "2025.02.1";
+  version = "2025.04.1";
 
   src = fetchFromGitHub {
     owner = "wills106";
     repo = "homeassistant-solax-modbus";
     tag = version;
-    hash = "sha256-xOW/jjBXw6N00yo1jE8ibU5XJ9drabBypVAL9UmNMVM=";
+    hash = "sha256-kX8poctK1Q7QZnpvkOisQ47jNzXJJ2nlB1fa+Pv4AFs=";
   };
 
   dependencies = [ pymodbus ];