diff --git a/pkgs/development/python-modules/yamlloader/default.nix b/pkgs/development/python-modules/yamlloader/default.nix
index c8b2d5949cb..5126afde05f 100644
--- a/pkgs/development/python-modules/yamlloader/default.nix
+++ b/pkgs/development/python-modules/yamlloader/default.nix
@@ -4,11 +4,11 @@
 
 buildPythonPackage rec {
   pname = "yamlloader";
-  version = "0.5.5";
+  version = "1.0.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "3KtfFrObsD0Q3aTNTzDJQ2dexMd3GAf8Z+fxuzGb9Mg=";
+    sha256 = "e96dc3dc6895d814c330c054c966d993fc81ef1dbf5a30a4bdafeb256359e058";
   };
 
   propagatedBuildInputs = [