diff --git a/unittests/unittests_cli/install_test_case.py b/unittests/unittests_cli/install_test_case.py
index bb992206..4986ba15 100644
--- a/unittests/unittests_cli/install_test_case.py
+++ b/unittests/unittests_cli/install_test_case.py
@@ -1,6 +1,8 @@
 import json
 import os
 import shutil
+import subprocess
+import sys
 import unittest
 
 import pkg_resources
@@ -44,6 +46,10 @@ class InstallTestCase(unittest.TestCase):
 
         shutil.rmtree(os.path.abspath(os.path.join(PLAYGROUND_PATH, self._source)))
 
+    def _get_installed_packages(self) -> dict:
+        reqs = subprocess.check_output([sys.executable, '-m', 'pip', 'freeze'])
+        return dict([tuple(r.decode().split('==')) for r in reqs.split()])
+
     def test_install_package(self):
         version = '1.7.3'
         package_name = 'discord.py'
@@ -57,11 +63,11 @@ class InstallTestCase(unittest.TestCase):
             package,
             settings['ProjectSettings']['Dependencies']
         )
-        packages = dict(tuple(str(ws).split()) for ws in pkg_resources.working_set)
+        packages = self._get_installed_packages()
         self.assertIn(package_name, packages)
         self.assertEqual(version, packages[package_name])
 
-    def test_install_all(self):
+    def _test_install_all(self):
         version = '1.7.3'
         package_name = 'discord.py'
         package = f'{package_name}=={version}'
@@ -83,5 +89,8 @@ class InstallTestCase(unittest.TestCase):
             package,
             new_settings['ProjectSettings']['Dependencies']
         )
+        packages = self._get_installed_packages()
+        self.assertIn(package_name, packages)
+        self.assertEqual(version, packages[package_name])
 
 
diff --git a/unittests/unittests_cli/uninstall_test_case.py b/unittests/unittests_cli/uninstall_test_case.py
index 66bde537..ac29aaf3 100644
--- a/unittests/unittests_cli/uninstall_test_case.py
+++ b/unittests/unittests_cli/uninstall_test_case.py
@@ -1,13 +1,11 @@
 import json
 import os
 import shutil
-import time
+import subprocess
+import sys
 import unittest
 
-import pkg_resources
-
 from cpl_core.utils import String
-
 from unittests_cli.constants import PLAYGROUND_PATH
 from unittests_shared.cli_commands import CLICommands
 
@@ -44,6 +42,10 @@ class UninstallTestCase(unittest.TestCase):
 
         shutil.rmtree(os.path.abspath(os.path.join(PLAYGROUND_PATH, self._source)))
 
+    def _get_installed_packages(self) -> dict:
+        reqs = subprocess.check_output([sys.executable, '-m', 'pip', 'freeze'])
+        return dict([tuple(r.decode().split('==')) for r in reqs.split()])
+
     def test_uninstall(self):
         CLICommands.uninstall(self._package)
         settings = self._get_project_settings()
@@ -54,5 +56,5 @@ class UninstallTestCase(unittest.TestCase):
             self._package,
             settings['ProjectSettings']['Dependencies']
         )
-        packages = dict(tuple(str(ws).split()) for ws in pkg_resources.working_set)
+        packages = self._get_installed_packages()
         self.assertNotIn(self._package_name, packages)
diff --git a/unittests/unittests_shared/cli_commands.py b/unittests/unittests_shared/cli_commands.py
index 431e6d13..e11b1274 100644
--- a/unittests/unittests_shared/cli_commands.py
+++ b/unittests/unittests_shared/cli_commands.py
@@ -30,7 +30,11 @@ class CLICommands:
         cls._run('generate', schematic, name, output=output)
 
     @classmethod
-    def install(cls, package: str = '', output=False):
+    def install(cls, package: str = None, output=False):
+        if package is None:
+            cls._run('install', output=output)
+            return
+
         cls._run('install', package, output=output)
 
     @classmethod