diff --git a/pkgs/development/python-modules/s3fs/default.nix b/pkgs/development/python-modules/s3fs/default.nix
index f04274d6b50..5c0d34a3e90 100644
--- a/pkgs/development/python-modules/s3fs/default.nix
+++ b/pkgs/development/python-modules/s3fs/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "s3fs";
-  version = "0.3.5";
+  version = "0.4.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "f1d8d80ae7789e6c95f8432e3ec12d1c28e624aecf8c84afed373fb182b505ab";
+    sha256 = "504a41ecb9edf0bd7798847b61839954e50508c5235ec7ee48c539ce46b4fa18";
   };
 
   buildInputs = [ docutils ];