diff --git a/pkgs/development/python-modules/parsel/default.nix b/pkgs/development/python-modules/parsel/default.nix
index ef6c795773c..0135b98cbda 100644
--- a/pkgs/development/python-modules/parsel/default.nix
+++ b/pkgs/development/python-modules/parsel/default.nix
@@ -11,11 +11,11 @@
 
 buildPythonPackage rec {
   pname = "parsel";
-  version = "1.1.0";
+  version = "1.5.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0a34d1c0bj1fzb5dk5744m2ag6v3b8glk4xp0amqxdan9ldbcd97";
+    sha256 = "9ccd82b8a122345601f6f9209e972c0e8c3518a188fcff2d37cb4d7bc570b4b8";
   };
 
   buildInputs = [ pytest pytestrunner ];