diff --git a/atst/models/environment.py b/atst/models/environment.py
index d58ef270..5b091bac 100644
--- a/atst/models/environment.py
+++ b/atst/models/environment.py
@@ -18,3 +18,7 @@ class Environment(Base, TimestampsMixin):
     @property
     def users(self):
         return [r.user for r in self.roles]
+
+    @property
+    def num_users(self):
+        return len(self.users)
diff --git a/templates/workspace_projects.html b/templates/workspace_projects.html
index 0ad2d6ef..81aa8a11 100644
--- a/templates/workspace_projects.html
+++ b/templates/workspace_projects.html
@@ -39,7 +39,7 @@
             </a>
 
             <div class='project-list-item__environment__members'>
-              <div class='label'>0</div>
+              <div class='label'>{{ environment.num_users }}</div>
               <span>members</span>
             </div>
           </li>
diff --git a/tests/models/test_environments.py b/tests/models/test_environments.py
index 11dc6408..6bb4768f 100644
--- a/tests/models/test_environments.py
+++ b/tests/models/test_environments.py
@@ -9,7 +9,9 @@ def test_add_user_to_environment():
     developer = UserFactory.from_atat_role("developer")
 
     workspace = Workspaces.create(RequestFactory.create(creator=owner))
-    project = Projects.create(workspace, "my test project", "It's mine.", ["dev", "staging", "prod"])
+    project = Projects.create(
+        workspace, "my test project", "It's mine.", ["dev", "staging", "prod"]
+    )
     dev_environment = project.environments[0]
 
     dev_environment = Environments.add_member(owner, dev_environment, developer)