diff --git a/pkgs/development/python-modules/yalexs/default.nix b/pkgs/development/python-modules/yalexs/default.nix
index 8a320eb103a0..638e5002885b 100644
--- a/pkgs/development/python-modules/yalexs/default.nix
+++ b/pkgs/development/python-modules/yalexs/default.nix
@@ -17,7 +17,7 @@
 
 buildPythonPackage rec {
   pname = "yalexs";
-  version = "1.2.1";
+  version = "1.2.3";
   format = "setuptools";
 
   disabled = pythonOlder "3.6";
@@ -26,7 +26,7 @@ buildPythonPackage rec {
     owner = "bdraco";
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-7+4Icg3E6xrWmxObNzNuDc+MXJ9rnbgBHMK4uPBJeuY=";
+    sha256 = "sha256-O7a94UC7AB7MiTTpf68PWfim9anfYEWbvgsQsTV74VA=";
   };
 
   propagatedBuildInputs = [