diff --git a/pkgs/development/python-modules/approvaltests/default.nix b/pkgs/development/python-modules/approvaltests/default.nix
index e53ddc829b01..45560104fcda 100644
--- a/pkgs/development/python-modules/approvaltests/default.nix
+++ b/pkgs/development/python-modules/approvaltests/default.nix
@@ -20,21 +20,18 @@
 
 buildPythonPackage rec {
   pname = "approvaltests";
-  version = "17.1.1";
+  version = "17.2.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "approvals";
     repo = "ApprovalTests.Python";
     tag = "v${version}";
-    hash = "sha256-G5DcD1Xw3al9JOBPhGwmMttifPYTDjEQrcS2H3AXbiU=";
+    hash = "sha256-fHvnMrwATmwXkSp+WI2v4f885iycgJzEmWD0nPiBMbg=";
   };
 
   postPatch = ''
-    test -f setup.py || mv setup/setup.py .
-    touch setup/__init__.py
-    substituteInPlace setup.py \
-      --replace-fail "from setup_utils" "from setup.setup_utils"
+    test -f setup.py || mv setup/setup.publish.py setup.py
 
     patchShebangs internal_documentation/scripts
   '';