diff --git a/pyproject.toml b/pyproject.toml
index 35243c7..a04bb77 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "tox-poetry-installer"
-version = "0.3.0"
+version = "0.3.1"
 license = "MIT"
 authors = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]
 description = "Tox plugin to install Tox environment dependencies using the Poetry backend and lockfile"
diff --git a/tox_poetry_installer.py b/tox_poetry_installer.py
index f13ce9c..78293cd 100644
--- a/tox_poetry_installer.py
+++ b/tox_poetry_installer.py
@@ -45,7 +45,7 @@ from tox.venv import VirtualEnv as ToxVirtualEnv
 
 __title__ = "tox-poetry-installer"
 __summary__ = "Tox plugin to install Tox environment dependencies using the Poetry backend and lockfile"
-__version__ = "0.3.0"
+__version__ = "0.3.1"
 __url__ = "https://github.com/enpaul/tox-poetry-installer/"
 __license__ = "MIT"
 __authors__ = ["Ethan Paul <24588726+enpaul@users.noreply.github.com>"]
@@ -233,7 +233,7 @@ def _install_env_dependencies(
             raise err
 
     reporter.verbosity1(
-        f"{_REPORTER_PREFIX} identified {len(dependencies)} total dependencies from {len(venv.envconfig.deps)} env dependencies"
+        f"{_REPORTER_PREFIX} identified {len(dependencies)} total dependencies from {len(env_deps.locked_deps)} locked env dependencies"
     )
 
     reporter.verbosity1(
@@ -262,13 +262,16 @@ def _install_project_dependencies(
         f"{_REPORTER_PREFIX} performing installation of project dependencies"
     )
 
-    base_dependencies = [
-        packages[item.name] for item in poetry.package.requires if not item.is_optional
+    base_dependencies: List[PoetryPackage] = [
+        packages[item.name]
+        for item in poetry.package.requires
+        if not item.is_optional()
     ]
 
+    extra_dependencies: List[PoetryPackage] = []
     for extra in venv.envconfig.extras:
         try:
-            extra_dependencies = [
+            extra_dependencies += [
                 packages[item.name] for item in poetry.package.extras[extra]
             ]
         except KeyError: