diff --git a/README.md b/README.md
index c12ce50..a0d32b7 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,13 @@ the `poetry check-project` command will:
 6. remove the temporary folder.
 
 
+The default setting for the underlying `MyPy` configuration is:
+
+``` shell
+--explicit-package-bases --namespace-packages --no-error-summary --no-color-output
+```
+
+
 ## How is it different from the "poetry build" command?
 Poetry does not allow package includes outside of the __project__ root.
 
diff --git a/poetry_multiproject_plugin/commands/checkproject/check.py b/poetry_multiproject_plugin/commands/checkproject/check.py
index d60f32a..56ce2c4 100644
--- a/poetry_multiproject_plugin/commands/checkproject/check.py
+++ b/poetry_multiproject_plugin/commands/checkproject/check.py
@@ -4,7 +4,7 @@
 
 from cleo.helpers import option
 from cleo.io.outputs.output import Verbosity
-from poetry.console.commands.build import BuildCommand
+from poetry.console.commands.command import Command
 from poetry.factory import Factory
 
 from poetry_multiproject_plugin.components.check import check_for_errors
@@ -31,7 +31,7 @@ def run_check(destination: Path, pyproj: str, config_file: str) -> List[str]:
     return [row.replace(dest, "") for row in flattened]
 
 
-class ProjectCheckCommand(BuildCommand):
+class ProjectCheckCommand(Command):
     name = command_name
 
     options = [
@@ -65,14 +65,13 @@ def handle(self):
         self.prepare_for_build(project_path.absolute())
 
         self.io.set_verbosity(Verbosity.QUIET)
-        super(ProjectCheckCommand, self).handle()
-
-        mypy_config = self.option("config-file")
 
         cleanup.remove_file(project_path, "poetry.lock")
+        cleanup.remove_file(project_path, "poetry.toml")
 
         install_deps(project_path)
 
+        mypy_config = self.option("config-file")
         res = run_check(project_path, pyproj, mypy_config)
 
         self.io.set_verbosity(Verbosity.NORMAL)
diff --git a/poetry_multiproject_plugin/components/deps/installer.py b/poetry_multiproject_plugin/components/deps/installer.py
index ec97836..a44db7b 100644
--- a/poetry_multiproject_plugin/components/deps/installer.py
+++ b/poetry_multiproject_plugin/components/deps/installer.py
@@ -3,6 +3,11 @@
 from pathlib import Path
 
 
+def ensure_reusable_venv():
+    subprocess.run(["poetry", "config", "--local", "virtualenvs.in-project", "false"])
+    subprocess.run(["poetry", "config", "--local", "virtualenvs.path", "--unset"])
+
+
 def run_install_command():
     subprocess.run(["poetry", "install", "--only", "main", "--quiet"])
 
@@ -15,6 +20,7 @@ def install_deps(destination: Path):
     current_dir = Path.cwd()
 
     navigate_to(destination)
+    ensure_reusable_venv()
     run_install_command()
 
     navigate_to(current_dir)
diff --git a/poetry_multiproject_plugin/components/project/cleanup.py b/poetry_multiproject_plugin/components/project/cleanup.py
index 17655e6..7ed966f 100644
--- a/poetry_multiproject_plugin/components/project/cleanup.py
+++ b/poetry_multiproject_plugin/components/project/cleanup.py
@@ -8,4 +8,7 @@ def remove_project(project_path: Path):
 
 
 def remove_file(project_path: Path, file_name: str):
-    os.remove(project_path / file_name)
+    try:
+        os.remove(project_path / file_name)
+    except FileNotFoundError:
+        pass
diff --git a/pyproject.toml b/pyproject.toml
index 8a33d08..a96e769 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "poetry-multiproject-plugin"
-version = "1.1.1"
+version = "1.1.2"
 description = "A Poetry plugin that makes it possible to use relative package includes."
 authors = ["David Vujic"]
 homepage = "https://github.com/davidvujic/poetry-multiproject-plugin"