diff --git a/pkgs/development/python-modules/flask/default.nix b/pkgs/development/python-modules/flask/default.nix
index 1a2c6417167..b7372fa9032 100644
--- a/pkgs/development/python-modules/flask/default.nix
+++ b/pkgs/development/python-modules/flask/default.nix
@@ -3,12 +3,12 @@
 
 buildPythonPackage rec {
   name = "${pname}-${version}";
-  version = "0.12.4";
+  version = "1.0.2";
   pname = "Flask";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "2ea22336f6d388b4b242bc3abf8a01244a8aa3e236e7407469ef78c16ba355dd";
+    sha256 = "2271c0070dbcb5275fad4a82e29f23ab92682dc45f9dfbc22c02ba9b9322ce48";
   };
 
   checkInputs = [ pytest ];