diff --git a/pkgs/development/python-modules/effect/default.nix b/pkgs/development/python-modules/effect/default.nix
index 6b8329550da..fec5518f0e8 100644
--- a/pkgs/development/python-modules/effect/default.nix
+++ b/pkgs/development/python-modules/effect/default.nix
@@ -7,12 +7,12 @@
 , testtools
 }:
 buildPythonPackage rec {
-  version = "0.12.0";
+  version = "1.1.0";
   pname = "effect";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0s8zsncq4l0ar2b4dijf8yzrk13x2swr1w2nb30s1p5jd6r24czl";
+    sha256 = "7affb603707c648b07b11781ebb793a4b9aee8acf1ac5764c3ed2112adf0c9ea";
   };
   checkInputs = [
     pytest