diff --git a/pkgs/development/python-modules/islpy/default.nix b/pkgs/development/python-modules/islpy/default.nix
index 736588aa4504..918d8be8e9f1 100644
--- a/pkgs/development/python-modules/islpy/default.nix
+++ b/pkgs/development/python-modules/islpy/default.nix
@@ -11,12 +11,12 @@
 
 buildPythonPackage rec {
   pname = "islpy";
-  version = "2020.2.2";
+  version = "2021.1";
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "7eb7dfa41d6a67d9ee4ea4bb9f08bdbcbee42b364502136b7882cfd80ff427e0";
+    sha256 = "b3f49de925149dbf2482e648016507cd66d0dce6668a1bc4de5e7a937e9c576d";
   };
 
   postConfigure = ''