diff --git a/pkgs/development/python-modules/rfc3986/default.nix b/pkgs/development/python-modules/rfc3986/default.nix
index 7d8a44365c4..3af6d2f022b 100644
--- a/pkgs/development/python-modules/rfc3986/default.nix
+++ b/pkgs/development/python-modules/rfc3986/default.nix
@@ -3,11 +3,11 @@
 
 buildPythonPackage rec {
   pname = "rfc3986";
-  version = "1.3.2";
+  version = "1.4.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0344d0bd428126ce554e7ca2b61787b6a28d2bbd19fc70ed2dd85efe31176405";
+    sha256 = "17dvx15m3r49bmif5zlli8kzjd6bys6psixzbp14sd5367d9h8qi";
   };
 
   checkInputs = [ pytest ];