diff --git a/pkgs/development/python-modules/poetry-core/default.nix b/pkgs/development/python-modules/poetry-core/default.nix
index 737985ece249..b009ec945724 100644
--- a/pkgs/development/python-modules/poetry-core/default.nix
+++ b/pkgs/development/python-modules/poetry-core/default.nix
@@ -15,15 +15,16 @@
 
 buildPythonPackage rec {
   pname = "poetry-core";
-  version = "1.1.0";
+  version = "1.2.0";
   format = "pyproject";
+
   disabled = pythonOlder "3.7";
 
   src = fetchFromGitHub {
     owner = "python-poetry";
     repo = pname;
     rev = version;
-    sha256 = "sha256-WUgBrO9h1E7N2SVFD47UPv39DMx1yQviV5tcNPmR+/g=";
+    hash = "sha256-d/VhnG+6qabgLMb8ki46R9+lpCwZNlS8QpM8u3VYmWs=";
   };
 
   propagatedBuildInputs = lib.optionals (pythonOlder "3.8") [
@@ -41,13 +42,20 @@ buildPythonPackage rec {
     virtualenv
   ];
 
-  # requires git history to work correctly
-  disabledTests = [ "default_with_excluded_data" "default_src_with_excluded_data" ];
+  # Requires git history to work correctly
+  disabledTests = [
+    "default_with_excluded_data"
+    "default_src_with_excluded_data"
+  ];
 
-  pythonImportsCheck = [ "poetry.core" ];
+  pythonImportsCheck = [
+    "poetry.core"
+  ];
 
-  # allow for package to use pep420's native namespaces
-  pythonNamespaces = [ "poetry" ];
+  # Allow for package to use pep420's native namespaces
+  pythonNamespaces = [
+    "poetry"
+  ];
 
   meta = with lib; {
     description = "Core utilities for Poetry";