diff --git a/src/resources/WorkflowRuns.ts b/src/resources/WorkflowRuns.ts
index e81d615..2b29fd1 100644
--- a/src/resources/WorkflowRuns.ts
+++ b/src/resources/WorkflowRuns.ts
@@ -1,4 +1,5 @@
 import { AxiosInstance } from "axios";
+import { OnfidoDownload } from "../OnfidoDownload";
 import { Method, Resource } from "../Resource";
 
 export type WorkflowRunRequest = {
@@ -8,15 +9,15 @@ export type WorkflowRunRequest = {
 };
 
 type WorkflowRunError = {
-  type:	string;
+  type: string;
   message: string;
 }
 
 type WorkflowRunLink = {
-  url:	string;
-  completed_redirect_url:	string;
-  expired_redirect_url:	string;
-  expires_at:	string;
+  url: string;
+  completed_redirect_url: string;
+  expired_redirect_url: string;
+  expires_at: string;
   language: string;
 }
 
@@ -63,4 +64,8 @@ export class WorkflowRuns extends Resource<WorkflowRunRequest> {
 
     return workflowRuns;
   }
+
+  public async evidence(id: string): Promise<OnfidoDownload> {
+    return super.download(`${id}/signed_evidence_file`);
+  }
 }
diff --git a/test/resources/WorkflowRuns.test.ts b/test/resources/WorkflowRuns.test.ts
index d8b26b1..ba9a5b6 100644
--- a/test/resources/WorkflowRuns.test.ts
+++ b/test/resources/WorkflowRuns.test.ts
@@ -1,4 +1,4 @@
-import { Applicant, WorkflowRun } from "onfido-node";
+import { Applicant, WorkflowRun, OnfidoDownload } from "onfido-node";
 
 import { exampleWorkflowRun } from "../testExamples";
 import {
@@ -79,3 +79,15 @@ it("lists workflow runs", async () => {
     ])
   );
 });
+
+it("downloads a signed evidence file", async () => {
+  const workflowRun = await createWorkflowRun(applicant, workflow_id);
+
+  createNock()
+    .get("/workflow_runs/" + workflowRun.id + "/signed_evidence_file")
+    .reply(200, {});
+
+  const file = await onfido.workflowRun.evidence(workflowRun.id);
+
+  expect(file).toBeInstanceOf(OnfidoDownload);
+});