diff --git a/poetry_multiproject_plugin/commands/buildproject/project.py b/poetry_multiproject_plugin/commands/buildproject/project.py
index 86f59ec..b7018e2 100644
--- a/poetry_multiproject_plugin/commands/buildproject/project.py
+++ b/poetry_multiproject_plugin/commands/buildproject/project.py
@@ -79,7 +79,12 @@ def rewrite_modules(self, project_path: Path, top_ns: str) -> None:
     def prepare_for_build(self, path: Path):
         project_poetry = Factory().create_poetry(path)
 
-        self.set_poetry(project_poetry)
+        if hasattr(self, "set_poetry"):
+            self.set_poetry(project_poetry)
+        elif hasattr(self, "_poetry"):
+            self._poetry = project_poetry
+        else:
+            raise ValueError("Cannot find expected Poetry Command internals.")
 
     def handle(self):
         path = self.poetry.file.path.absolute()
diff --git a/pyproject.toml b/pyproject.toml
index dc6589d..898a2ae 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "poetry-multiproject-plugin"
-version = "1.8.1"
+version = "1.8.2"
 description = "A Poetry plugin that makes it possible to use relative package includes."
 authors = ["David Vujic"]
 license = "MIT"