diff --git a/app/serializers/user_serializer.rb b/app/serializers/user_serializer.rb
index c8edf087b..b9b56840e 100644
--- a/app/serializers/user_serializer.rb
+++ b/app/serializers/user_serializer.rb
@@ -9,7 +9,7 @@ class UserSerializer
     project_email_communication beta_email_communication nasa_email_communication
     uploaded_subjects_count subject_limit admin login_prompt zooniverse_id
     upload_whitelist valid_email ux_testing_email_communication
-    intervention_notifications banned
+    intervention_notifications banned confirmed_at
   ).freeze
 
   attributes :id, :login, :display_name, :credited_name, :email, :languages,
@@ -18,7 +18,7 @@ class UserSerializer
     :subject_limit, :uploaded_subjects_count, :admin, :href, :login_prompt,
     :private_profile, :zooniverse_id, :upload_whitelist, :avatar_src,
     :valid_email, :ux_testing_email_communication, :intervention_notifications,
-    :banned
+    :banned, :confirmed_at
 
   can_include :classifications, :project_preferences, :collection_preferences,
     projects: { param: "owner", value: "login" },
diff --git a/spec/controllers/api/v1/users_controller_spec.rb b/spec/controllers/api/v1/users_controller_spec.rb
index 5190ecad0..6e042757c 100644
--- a/spec/controllers/api/v1/users_controller_spec.rb
+++ b/spec/controllers/api/v1/users_controller_spec.rb
@@ -392,6 +392,12 @@
       expect(result).to eq(user.upload_whitelist)
     end
 
+    it "should have the confirmed_at for the user" do
+      result = user_response["confirmed_at"]
+      # Dates are JSON serialized via iso8601 and .to_json adds quotes
+      expect(result).to eq(user.confirmed_at.iso8601(3))
+    end
+
     it_behaves_like "an api response"
   end
 
diff --git a/spec/factories/users.rb b/spec/factories/users.rb
index 9d1a11be9..58cec5c91 100644
--- a/spec/factories/users.rb
+++ b/spec/factories/users.rb
@@ -8,8 +8,8 @@
     sequence(:email) {|n| "example#{n}@example.com"}
     password { 'password' }
     encrypted_password { User.new.send(:password_digest, 'password') }
-    confirmed_at { Time.current }
-    confirmation_sent_at { Time.current }
+    confirmed_at { Time.utc(2024, 1, 1, 12, 0, 0) }
+    confirmation_sent_at { Time.utc(2024, 1, 1, 12, 0, 0) }
     credited_name { 'Dr User' }
     activated_state { :active }
     sequence(:login) { |n| "new_user_#{n}" }