diff --git a/apps/challenges/serializers.py b/apps/challenges/serializers.py
index 850c16e3c1..3ce933c427 100644
--- a/apps/challenges/serializers.py
+++ b/apps/challenges/serializers.py
@@ -91,7 +91,8 @@ class Meta:
             "uses_ec2_worker",
             "ec2_storage",
             "evaluation_module_error",
-            "worker_image_url"
+            "worker_image_url",
+            "worker_instance_type"
         )
 
 
diff --git a/tests/unit/challenges/test_views.py b/tests/unit/challenges/test_views.py
index 59fd0e182e..67a5ef0af5 100644
--- a/tests/unit/challenges/test_views.py
+++ b/tests/unit/challenges/test_views.py
@@ -192,6 +192,7 @@ def test_get_challenge(self):
                 "evaluation_module_error": self.challenge.evaluation_module_error,
                 "ec2_storage": self.challenge.ec2_storage,
                 "worker_image_url": self.challenge.worker_image_url,
+                "worker_instance_type": self.challenge.worker_instance_type,
             }
         ]
 
@@ -544,6 +545,7 @@ def test_get_particular_challenge(self):
             "evaluation_module_error": self.challenge.evaluation_module_error,
             "ec2_storage": self.challenge.ec2_storage,
             "worker_image_url": self.challenge.worker_image_url,
+            "worker_instance_type": self.challenge.worker_instance_type,
         }
         response = self.client.get(self.url, {})
         self.assertEqual(response.data, expected)
@@ -643,6 +645,7 @@ def test_update_challenge_when_user_is_its_creator(self):
             "evaluation_module_error": self.challenge.evaluation_module_error,
             "ec2_storage": self.challenge.ec2_storage,
             "worker_image_url": self.challenge.worker_image_url,
+            "worker_instance_type": self.challenge.worker_instance_type,
         }
         response = self.client.put(
             self.url, {"title": new_title, "description": new_description}
@@ -768,6 +771,7 @@ def test_particular_challenge_partial_update(self):
             "evaluation_module_error": self.challenge.evaluation_module_error,
             "ec2_storage": self.challenge.ec2_storage,
             "worker_image_url": self.challenge.worker_image_url,
+            "worker_instance_type": self.challenge.worker_instance_type,
         }
         response = self.client.patch(self.url, self.partial_update_data)
         self.assertEqual(response.data, expected)
@@ -842,6 +846,7 @@ def test_particular_challenge_update(self):
             "evaluation_module_error": self.challenge.evaluation_module_error,
             "ec2_storage": self.challenge.ec2_storage,
             "worker_image_url": self.challenge.worker_image_url,
+            "worker_instance_type": self.challenge.worker_instance_type,
         }
         response = self.client.put(self.url, self.data)
         self.assertEqual(response.data, expected)
@@ -1432,6 +1437,7 @@ def test_get_past_challenges(self):
                 "evaluation_module_error": self.challenge3.evaluation_module_error,
                 "ec2_storage": self.challenge3.ec2_storage,
                 "worker_image_url": self.challenge3.worker_image_url,
+                "worker_instance_type": self.challenge3.worker_instance_type,
             }
         ]
         response = self.client.get(self.url, {}, format="json")
@@ -1512,6 +1518,7 @@ def test_get_present_challenges(self):
                 "evaluation_module_error": self.challenge2.evaluation_module_error,
                 "ec2_storage": self.challenge.ec2_storage,
                 "worker_image_url": self.challenge.worker_image_url,
+                "worker_instance_type": self.challenge.worker_instance_type,
             }
         ]
         response = self.client.get(self.url, {}, format="json")
@@ -1592,6 +1599,7 @@ def test_get_future_challenges(self):
                 "evaluation_module_error": self.challenge4.evaluation_module_error,
                 "ec2_storage": self.challenge4.ec2_storage,
                 "worker_image_url": self.challenge4.worker_image_url,
+                "worker_instance_type": self.challenge4.worker_instance_type,
             }
         ]
         response = self.client.get(self.url, {}, format="json")
@@ -1672,6 +1680,7 @@ def test_get_all_challenges(self):
                 "evaluation_module_error": self.challenge3.evaluation_module_error,
                 "ec2_storage": self.challenge3.ec2_storage,
                 "worker_image_url": self.challenge3.worker_image_url,
+                "worker_instance_type": self.challenge3.worker_instance_type,
             },
             {
                 "id": self.challenge3.pk,
@@ -1736,6 +1745,7 @@ def test_get_all_challenges(self):
                 "evaluation_module_error": self.challenge3.evaluation_module_error,
                 "ec2_storage": self.challenge3.ec2_storage,
                 "worker_image_url": self.challenge3.worker_image_url,
+                "worker_instance_type": self.challenge3.worker_instance_type,
             },
             {
                 "id": self.challenge2.pk,
@@ -1800,6 +1810,7 @@ def test_get_all_challenges(self):
                 "evaluation_module_error": self.challenge2.evaluation_module_error,
                 "ec2_storage": self.challenge2.ec2_storage,
                 "worker_image_url": self.challenge2.worker_image_url,
+                "worker_instance_type": self.challenge2.worker_instance_type,
             },
         ]
         response = self.client.get(self.url, {}, format="json")
@@ -1935,6 +1946,7 @@ def test_get_featured_challenges(self):
                 "evaluation_module_error": self.challenge3.evaluation_module_error,
                 "ec2_storage": self.challenge3.ec2_storage,
                 "worker_image_url": self.challenge3.worker_image_url,
+                "worker_instance_type": self.challenge3.worker_instance_type,
             }
         ]
         response = self.client.get(self.url, {}, format="json")
@@ -2094,6 +2106,7 @@ def test_get_challenge_by_pk_when_user_is_challenge_host(self):
             "evaluation_module_error": self.challenge3.evaluation_module_error,
             "ec2_storage": self.challenge3.ec2_storage,
             "worker_image_url": self.challenge3.worker_image_url,
+            "worker_instance_type": self.challenge3.worker_instance_type,
         }
 
         response = self.client.get(self.url, {})
@@ -2182,6 +2195,7 @@ def test_get_challenge_by_pk_when_user_is_participant(self):
             "evaluation_module_error": self.challenge4.evaluation_module_error,
             "ec2_storage": self.challenge4.ec2_storage,
             "worker_image_url": self.challenge4.worker_image_url,
+            "worker_instance_type": self.challenge4.worker_instance_type,
         }
 
         self.client.force_authenticate(user=self.user1)
@@ -2330,6 +2344,7 @@ def test_get_challenge_when_host_team_is_given(self):
                 "evaluation_module_error": self.challenge2.evaluation_module_error,
                 "ec2_storage": self.challenge2.ec2_storage,
                 "worker_image_url": self.challenge2.worker_image_url,
+                "worker_instance_type": self.challenge2.worker_instance_type,
             }
         ]
 
@@ -2406,6 +2421,7 @@ def test_get_challenge_when_participant_team_is_given(self):
                 "evaluation_module_error": self.challenge2.evaluation_module_error,
                 "ec2_storage": self.challenge2.ec2_storage,
                 "worker_image_url": self.challenge2.worker_image_url,
+                "worker_instance_type": self.challenge2.worker_instance_type,
             }
         ]
 
@@ -2482,6 +2498,7 @@ def test_get_challenge_when_mode_is_participant(self):
                 "evaluation_module_error": self.challenge2.evaluation_module_error,
                 "ec2_storage": self.challenge2.ec2_storage,
                 "worker_image_url": self.challenge2.worker_image_url,
+                "worker_instance_type": self.challenge2.worker_instance_type,
             }
         ]
 
@@ -2556,6 +2573,7 @@ def test_get_challenge_when_mode_is_host(self):
                 "evaluation_module_error": self.challenge.evaluation_module_error,
                 "ec2_storage": self.challenge.ec2_storage,
                 "worker_image_url": self.challenge.worker_image_url,
+                "worker_instance_type": self.challenge.worker_instance_type,
             },
             {
                 "id": self.challenge2.pk,
@@ -2620,6 +2638,7 @@ def test_get_challenge_when_mode_is_host(self):
                 "evaluation_module_error": self.challenge2.evaluation_module_error,
                 "ec2_storage": self.challenge2.ec2_storage,
                 "worker_image_url": self.challenge2.worker_image_url,
+                "worker_instance_type": self.challenge2.worker_instance_type,
             },
         ]
 
diff --git a/tests/unit/participants/test_views.py b/tests/unit/participants/test_views.py
index ac3e5ed460..53e9ecdaa6 100644
--- a/tests/unit/participants/test_views.py
+++ b/tests/unit/participants/test_views.py
@@ -881,6 +881,7 @@ def test_get_teams_and_corresponding_challenges_for_a_participant(self):
                         "ec2_storage": self.challenge1.ec2_storage,
                         "evaluation_module_error": self.challenge1.evaluation_module_error,
                         "worker_image_url": self.challenge1.worker_image_url,
+                        "worker_instance_type": self.challenge1.worker_instance_type,
                     },
                     "participant_team": {
                         "id": self.participant_team.id,
@@ -972,6 +973,7 @@ def test_get_participant_team_challenge_list(self):
                 "ec2_storage": self.challenge1.ec2_storage,
                 "evaluation_module_error": self.challenge1.evaluation_module_error,
                 "worker_image_url": self.challenge1.worker_image_url,
+                "worker_instance_type": self.challenge1.worker_instance_type,
             }
         ]