diff --git a/pkgs/development/python-modules/html2image/default.nix b/pkgs/development/python-modules/html2image/default.nix
index c53b9280eb59..bcf78da3db8f 100644
--- a/pkgs/development/python-modules/html2image/default.nix
+++ b/pkgs/development/python-modules/html2image/default.nix
@@ -21,13 +21,13 @@ buildPythonPackage rec {
 
   postPatch = ''
     substituteInPlace pyproject.toml \
-    --replace poetry.masonry.api poetry.core.masonry.api \
-    --replace "poetry>=" "poetry-core>="
+    --replace-fail poetry.masonry.api poetry.core.masonry.api \
+    --replace-fail "poetry>=" "poetry-core>="
   '';
 
-  nativeBuildInputs = [ poetry-core ];
+  build-system = [ poetry-core ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     requests
     websocket-client
   ];