diff --git a/pkgs/development/python-modules/flask-babel/default.nix b/pkgs/development/python-modules/flask-babel/default.nix
index caaf0a61152b..307b670fa7f1 100644
--- a/pkgs/development/python-modules/flask-babel/default.nix
+++ b/pkgs/development/python-modules/flask-babel/default.nix
@@ -11,11 +11,11 @@
 
 buildPythonPackage rec {
   pname = "Flask-Babel";
-  version = "0.12.2";
+  version = "1.0.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "11jwp8vvq1gnm31qh6ihy2h393hy18yn9yjp569g60r0wj1x2sii";
+    sha256 = "0gmb165vkwv5v7dxsxa2i3zhafns0fh938m2zdcrv4d8z5l099yn";
   };
 
   propagatedBuildInputs = [