diff --git a/pkgs/development/python-modules/pyspread/default.nix b/pkgs/development/python-modules/pyspread/default.nix
index 14abe9ff02d..16f1e2c215e 100644
--- a/pkgs/development/python-modules/pyspread/default.nix
+++ b/pkgs/development/python-modules/pyspread/default.nix
@@ -18,11 +18,11 @@
 
 buildPythonPackage rec {
   pname = "pyspread";
-  version = "1.1.3";
+  version = "1.99.2";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "6e5d0eb49750eed7734852e15727e190270880c75dcc5f6c8fb1bfdaa59c48fc";
+    sha256 = "117268cbeb225e0aca4c59381b7bdf5333bf95ca85c1db410a326a887a74f3da";
   };
 
   propagatedBuildInputs = [ numpy wxPython matplotlib pycairo python-gnupg xlrd xlwt jedi pyenchant basemap pygtk ];