diff --git a/django/thunderstore/api/cyberstorm/tests/test_team.py b/django/thunderstore/api/cyberstorm/tests/test_team.py
index 0c84b4670..5a75209ca 100644
--- a/django/thunderstore/api/cyberstorm/tests/test_team.py
+++ b/django/thunderstore/api/cyberstorm/tests/test_team.py
@@ -1,3 +1,5 @@
+import json
+
 import pytest
 from django.contrib.auth import get_user_model
 from rest_framework.test import APIClient
@@ -5,7 +7,7 @@
 from thunderstore.account.factories import ServiceAccountFactory
 from thunderstore.core.types import UserType
 from thunderstore.repository.factories import TeamFactory, TeamMemberFactory
-from thunderstore.repository.models.team import Team
+from thunderstore.repository.models.team import Team, TeamMember
 
 User = get_user_model()
 
@@ -223,3 +225,69 @@ def test_team_service_accounts_api_view__for_member__sorts_results(
     assert result[0]["name"] == alice.first_name
     assert result[1]["name"] == bob.first_name
     assert result[2]["name"] == charlie.first_name
+
+
+@pytest.mark.django_db
+def test_team_members_edit__when_changing_role__succeeds(
+    api_client: APIClient,
+    user: UserType,
+    team: Team,
+):
+    TeamMemberFactory(team=team, user=user, role="owner")
+    api_client.force_authenticate(user)
+    just_a_member = TeamMemberFactory(team=team, role="owner")
+
+    response = api_client.post(
+        f"/api/cyberstorm/team/{team.name}/members/edit/",
+        json.dumps({"username": just_a_member.user.username, "role": "member"}),
+        content_type="application/json",
+    )
+
+    response_json = response.json()
+    assert response.status_code == 200
+    assert response_json["team_name"] == team.name
+    assert response_json["username"] == just_a_member.user.username
+    assert response_json["role"] == "member"
+    assert TeamMember.objects.get(pk=just_a_member.pk).role == "member"
+
+
+@pytest.mark.django_db
+def test_team_members_edit__when_changing_role__fails_because_user_is_not_in_the_team(
+    api_client: APIClient,
+    user: UserType,
+    team: Team,
+):
+    TeamMemberFactory(team=team, user=user, role="owner")
+    api_client.force_authenticate(user)
+    another_team = TeamFactory()
+    member_in_another_team = TeamMemberFactory(team=another_team, role="owner")
+
+    response = api_client.post(
+        f"/api/cyberstorm/team/{team.name}/members/edit/",
+        json.dumps(
+            {"username": member_in_another_team.user.username, "role": "member"}
+        ),
+        content_type="application/json",
+    )
+
+    assert response.status_code == 404
+    response_json = response.json()
+    assert response_json["detail"] == "Not found."
+
+
+@pytest.mark.django_db
+def test_team_members_edit__when_changing_role__fails_because_team_does_not_exist(
+    api_client: APIClient,
+    user: UserType,
+):
+    api_client.force_authenticate(user)
+
+    response = api_client.post(
+        f"/api/cyberstorm/team/GhostTeam/members/edit/",
+        json.dumps({"username": user.username, "role": "member"}),
+        content_type="application/json",
+    )
+
+    assert response.status_code == 404
+    response_json = response.json()
+    assert response_json["detail"] == "Not found."