diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 2311f6b64082..eb9c46c5c9ad 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2208,10 +2208,10 @@ self: super: with self; {
   cython = callPackage ../development/python-modules/Cython { };
 
   cython_3 = self.cython.overridePythonAttrs (old: rec {
-    version = "3.0.0a11";
+    version = "3.0.0b2";
     src = old.src.override {
       inherit version;
-      hash = "sha256-5GckkfsxVGuau2Nnf2OOc4CF3JMhOYFwlW72+/wOFyY=";
+      hash = "sha256-bEKAZWV56STBGURyR2ZLsi+v7cfezKWTqOogvdV9Z1U=";
     };
     patches = [ ];
   });