diff --git a/config/test.js b/config/test.js
index add8c31c..1d2ca856 100644
--- a/config/test.js
+++ b/config/test.js
@@ -2,6 +2,7 @@ module.exports = {
   API: {
     V2: 'https://api.topcoder-dev.com/v2',
     V3: 'https://api.topcoder-dev.com/v3',
+    V5: 'https://api.topcoder-dev.com/v5',
   },
   dummyConfigKey: 'Dummy config value',
   SECRET: {
diff --git a/src/actions/smp.js b/src/actions/smp.js
index 9c46f513..4cb5f34a 100644
--- a/src/actions/smp.js
+++ b/src/actions/smp.js
@@ -6,6 +6,7 @@
 import _ from 'lodash';
 import { createActions } from 'redux-actions';
 import { getApi } from '../services/api';
+import { getService as getSubmissionService } from '../services/submissions';
 
 /**
  * @static
@@ -17,13 +18,25 @@ function deleteSubmissionInit() {}
 /**
  * @static
  * @desc Creates an action that deletes user's submission to a challenge.
- * @param {String} tokenV3 Topcoder v3 auth token.
+ * @param {String} tokenV5 Topcoder v5 auth token.
  * @param {Number|String} submissionId Submission ID.
  * @return {Action}
  */
-function deleteSubmissionDone(tokenV3, submissionId) {
-  return getApi('V3', tokenV3).delete(`/submissions/${submissionId}`)
-    .then(() => submissionId);
+function deleteSubmissionDone(tokenV5, submissionId) {
+  const submissionsService = getSubmissionService(tokenV5);
+  const filters = { legacySubmissionId: submissionId };
+
+  // from the legacy submissionId first get the GUID of the submission
+  // and pass that id to the V5 api
+  return submissionsService.getSubmissions(filters, {})
+    .then((submissions) => {
+      if (submissions.length === 0) {
+        throw new Error(`Submission ${submissionId} does not exist.`);
+      }
+      return getApi('V5', tokenV5).delete(`/submissions/${submissions[0].id}`)
+        .then(res => (res.ok ? submissionId : new Error(res.statusText)))
+        .then(res => res);
+    });
 }
 
 /**