diff --git a/pkgs/development/python-modules/cupy/default.nix b/pkgs/development/python-modules/cupy/default.nix
index 2bbd20a16d7..2983255e8f9 100644
--- a/pkgs/development/python-modules/cupy/default.nix
+++ b/pkgs/development/python-modules/cupy/default.nix
@@ -6,11 +6,11 @@
 
 buildPythonPackage rec {
   pname = "cupy";
-  version = "7.7.0";
+  version = "8.1.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "b4032adf839f63bab7fc9f3e7066ef86abe0928e834aa5d132e4e7ce907951ed";
+    sha256 = "4dfa4a0cd0a752d980347c816cab2169f0938c1d37275311810396dcf3c27912";
   };
 
   checkInputs = [