diff --git a/pkgs/development/python-modules/pyrsistent/default.nix b/pkgs/development/python-modules/pyrsistent/default.nix
index 75cecc7d7091..5a1b66bfa26c 100644
--- a/pkgs/development/python-modules/pyrsistent/default.nix
+++ b/pkgs/development/python-modules/pyrsistent/default.nix
@@ -9,13 +9,13 @@
 
 buildPythonPackage rec {
   pname = "pyrsistent";
-  version = "0.18.0";
+  version = "0.18.1";
 
   disabled = isPy27;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "773c781216f8c2900b42a7b638d5b517bb134ae1acbebe4d1e8f1f41ea60eb4b";
+    sha256 = "sha256-1NYfi5k6clW6cU3zrKUnAPgSUon4T3BM+AkWUXxG65Y=";
   };
 
   propagatedBuildInputs = [ six ];