diff --git a/src/receivers/HTTPReceiver.spec.ts b/src/receivers/HTTPReceiver.spec.ts
index 02f2e3573..685e8eb37 100644
--- a/src/receivers/HTTPReceiver.spec.ts
+++ b/src/receivers/HTTPReceiver.spec.ts
@@ -71,6 +71,8 @@ describe('HTTPReceiver', function () {
       });
       assert.isNotNull(receiver);
     });
+  });
+  describe('request handling', function () {
     it('should invoke installer generateInstallUrl if a request comes into the install path', async function () {
       // Arrange
       const installProviderStub = sinon.createStubInstance(InstallProvider);
@@ -113,7 +115,7 @@ describe('HTTPReceiver', function () {
       assert(installProviderStub.generateInstallUrl.calledWith(sinon.match({ metadata, scopes, userScopes })));
       assert.isTrue(writeHead.calledWith(200));
     });
-    it('should rediect installers if directInstallEnabled is true', async function () {
+    it('should redirect installers if directInstallEnabled is true', async function () {
       // Arrange
       const installProviderStub = sinon.createStubInstance(InstallProvider);
       const overrides = mergeOverrides(
@@ -156,7 +158,52 @@ describe('HTTPReceiver', function () {
       assert(installProviderStub.generateInstallUrl.calledWith(sinon.match({ metadata, scopes, userScopes })));
       assert.isTrue(writeHead.calledWith(302, sinon.match.object));
     });
-    it('should return a 404 if a request comes into neither the install path nor the redirect URI path', async function () {
+    it('should invoke installer handler if a request comes into the redirect URI path', async function () {
+      // Arrange
+      const installProviderStub = sinon.createStubInstance(InstallProvider, {
+        handleCallback: sinon.stub().resolves() as unknown as Promise<void>,
+      });
+      const overrides = mergeOverrides(
+        withHttpCreateServer(this.fakeCreateServer),
+        withHttpsCreateServer(sinon.fake.throws('Should not be used.')),
+      );
+      const HTTPReceiver = await importHTTPReceiver(overrides);
+
+      const metadata = 'this is bat country';
+      const scopes = ['channels:read'];
+      const userScopes = ['chat:write'];
+      const callbackOptions = {};
+      const receiver = new HTTPReceiver({
+        logger: noopLogger,
+        clientId: 'my-clientId',
+        clientSecret: 'my-client-secret',
+        signingSecret: 'secret',
+        stateSecret: 'state-secret',
+        scopes,
+        installerOptions: {
+          authVersion: 'v2',
+          redirectUriPath: '/heyo',
+          callbackOptions,
+          metadata,
+          userScopes,
+        },
+      });
+      assert.isNotNull(receiver);
+      receiver.installer = installProviderStub as unknown as InstallProvider;
+      const fakeReq: IncomingMessage = sinon.createStubInstance(IncomingMessage) as IncomingMessage;
+      fakeReq.url = '/heyo';
+      fakeReq.headers = { host: 'localhost' };
+      fakeReq.method = 'GET';
+      const fakeRes: ServerResponse & {} = sinon.createStubInstance(ServerResponse) as unknown as ServerResponse;
+      const writeHead = sinon.fake();
+      const end = sinon.fake();
+      fakeRes.writeHead = writeHead;
+      fakeRes.end = end;
+      /* eslint-disable-next-line @typescript-eslint/await-thenable */
+      await receiver.requestListener(fakeReq, fakeRes);
+      assert(installProviderStub.handleCallback.calledWith(fakeReq, fakeRes, callbackOptions));
+    });
+    it('should throw if a request comes into neither the install path nor the redirect URI path', async function () {
       // Arrange
       const installProviderStub = sinon.createStubInstance(InstallProvider);
       const overrides = mergeOverrides(