diff --git a/pkgs/development/python-modules/aiohttp/default.nix b/pkgs/development/python-modules/aiohttp/default.nix
index b12fa8da9a9d..99bbd4f05fe0 100644
--- a/pkgs/development/python-modules/aiohttp/default.nix
+++ b/pkgs/development/python-modules/aiohttp/default.nix
@@ -8,7 +8,7 @@
   isPyPy,
 
   # build-system
-  cython_3_1,
+  cython,
   pkgconfig,
   setuptools,
 
@@ -75,7 +75,7 @@ buildPythonPackage rec {
   '';
 
   build-system = [
-    cython_3_1
+    cython
     pkgconfig
     setuptools
   ];
diff --git a/pkgs/development/python-modules/basswood-av/default.nix b/pkgs/development/python-modules/basswood-av/default.nix
index 2d9f44b5b5be..e6588b8962cd 100644
--- a/pkgs/development/python-modules/basswood-av/default.nix
+++ b/pkgs/development/python-modules/basswood-av/default.nix
@@ -4,7 +4,7 @@
   fetchFromGitHub,
   setuptools,
   pkg-config,
-  cython_3_1,
+  cython,
   ffmpeg,
 }:
 
@@ -22,7 +22,7 @@ buildPythonPackage rec {
 
   build-system = [
     setuptools
-    cython_3_1
+    cython
   ];
 
   nativeBuildInputs = [ pkg-config ];
diff --git a/pkgs/development/python-modules/cython/default.nix b/pkgs/development/python-modules/cython/default.nix
index 45fc174577ae..f62acbab3b90 100644
--- a/pkgs/development/python-modules/cython/default.nix
+++ b/pkgs/development/python-modules/cython/default.nix
@@ -16,14 +16,14 @@
 
 buildPythonPackage rec {
   pname = "cython";
-  version = "3.0.12";
+  version = "3.1.2";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "cython";
     repo = "cython";
     tag = version;
-    hash = "sha256-clJXjQb6rVECirKRUGX0vD5a6LILzPwNo7+6KKYs2pI=";
+    hash = "sha256-lP8ILCzAZuoPzFhCqGXwIpifN8XoWz93SJ7c3XVe69Y=";
   };
 
   build-system = [
diff --git a/pkgs/development/python-modules/pyyaml-ft/default.nix b/pkgs/development/python-modules/pyyaml-ft/default.nix
index 65061acf48ec..15abcf542c44 100644
--- a/pkgs/development/python-modules/pyyaml-ft/default.nix
+++ b/pkgs/development/python-modules/pyyaml-ft/default.nix
@@ -1,6 +1,6 @@
 {
   buildPythonPackage,
-  cython_3_1,
+  cython,
   fetchFromGitHub,
   lib,
   libyaml,
@@ -24,7 +24,7 @@ buildPythonPackage rec {
   };
 
   build-system = [
-    cython_3_1
+    cython
     setuptools
   ];
 
diff --git a/pkgs/development/python-modules/srctools/default.nix b/pkgs/development/python-modules/srctools/default.nix
index 117a97e5b39a..7d6de7ff2184 100644
--- a/pkgs/development/python-modules/srctools/default.nix
+++ b/pkgs/development/python-modules/srctools/default.nix
@@ -4,7 +4,7 @@
   fetchPypi,
   meson,
   meson-python,
-  cython_3_1,
+  cython,
   attrs,
   useful-types,
   pytestCheckHook,
@@ -28,7 +28,7 @@ buildPythonPackage {
   build-system = [
     meson
     meson-python
-    cython_3_1
+    cython
   ];
 
   dependencies = [
diff --git a/pkgs/development/python-modules/yarl/default.nix b/pkgs/development/python-modules/yarl/default.nix
index 5805d35482d1..36184650fcb9 100644
--- a/pkgs/development/python-modules/yarl/default.nix
+++ b/pkgs/development/python-modules/yarl/default.nix
@@ -2,7 +2,7 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
-  cython_3_1,
+  cython,
   expandvars,
   setuptools,
   idna,
@@ -28,7 +28,7 @@ buildPythonPackage rec {
   };
 
   build-system = [
-    cython_3_1
+    cython
     expandvars
     setuptools
   ];
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 6f5f7ded17ae..ca9dbdeee1ad 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3222,16 +3222,6 @@ self: super: with self; {
 
   cython_0 = callPackage ../development/python-modules/cython/0.nix { };
 
-  cython_3_1 = cython.overridePythonAttrs rec {
-    version = "3.1.2";
-    src = pkgs.fetchFromGitHub {
-      owner = "cython";
-      repo = "cython";
-      tag = version;
-      hash = "sha256-lP8ILCzAZuoPzFhCqGXwIpifN8XoWz93SJ7c3XVe69Y=";
-    };
-  };
-
   cytoolz = callPackage ../development/python-modules/cytoolz { };
 
   dacite = callPackage ../development/python-modules/dacite { };