diff --git a/pkgs/development/python-modules/acme-tiny/default.nix b/pkgs/development/python-modules/acme-tiny/default.nix
index 76e8a8401fd4..7d17af3ae787 100644
--- a/pkgs/development/python-modules/acme-tiny/default.nix
+++ b/pkgs/development/python-modules/acme-tiny/default.nix
@@ -3,11 +3,11 @@
 
 buildPythonPackage rec {
   pname = "acme-tiny";
-  version = "4.1.0";
+  version = "4.1.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0jmg525n4n98hwy3hf303jbnq23z79sqwgliji9j7qcnph47gkgq";
+    sha256 = "b7050b9428d45319e14ab9ea77f0ff4eb40451e5a68325d4c5358a87cff0e793";
   };
 
   patchPhase = ''