diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9d4b188..6cfb429 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,6 +38,12 @@ jobs:
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
       -
         name: Docker meta
         id: meta
@@ -56,6 +62,7 @@ jobs:
         uses: docker/build-push-action@v2
         with:
           context: .
+          platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
index 085423b..51b9b8f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,6 +16,8 @@ COPY yarn.lock .
 COPY .yarnrc.yml .
 COPY .yarn/releases ./.yarn/releases
 
+ENV JEST_TIMEOUT=30000
+
 RUN apk add --no-cache --update --virtual .gyp \
         vips-dev \
         python3 \
diff --git a/src/server.ts b/src/server.ts
index 3d80cfb..fc6bd65 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -169,7 +169,7 @@ function server(
           removeRegistrationRoute: bonobUrl
             .append({ pathname: REMOVE_REGISTRATION_ROUTE })
             .pathname(),
-          version: opts.version,
+          version: serverOpts.version || DEFAULT_SERVER_OPTS.version,
         });
       }
     );
diff --git a/tests/server.test.ts b/tests/server.test.ts
index 5cead43..27dd4e7 100644
--- a/tests/server.test.ts
+++ b/tests/server.test.ts
@@ -13,7 +13,7 @@ import makeServer, {
   rangeFilterFor,
 } from "../src/server";
 
-import { SONOS_DISABLED, Sonos, Device } from "../src/sonos";
+import { Device, Sonos, SONOS_DISABLED } from "../src/sonos";
 
 import { aDevice, aService } from "./builders";
 import { InMemoryMusicService } from "./in_memory_music_service";
@@ -165,7 +165,10 @@ describe("RangeBytesFromFilter", () => {
   });
 });
 
+
 describe("server", () => {
+  jest.setTimeout(Number.parseInt(process.env["JEST_TIMEOUT"] || "2000"));
+  
   beforeEach(() => {
     jest.clearAllMocks();
     jest.resetAllMocks();
@@ -182,25 +185,46 @@ describe("server", () => {
   [bonobUrlWithNoContextPath, bonobUrlWithContextPath].forEach((bonobUrl) => {
     describe(`a bonobUrl of ${bonobUrl}`, () => {
       describe("/", () => {
-        describe("displaying of version", () => {
-          const server = makeServer(
-            SONOS_DISABLED,
-            aService(),
-            bonobUrl,
-            new InMemoryMusicService(),
-            {
-              version: "v123.456",
-            }
-          );
+        describe("version", () => {
+          describe("when specified", () => {
+            const server = makeServer(
+              SONOS_DISABLED,
+              aService(),
+              bonobUrl,
+              new InMemoryMusicService(),
+              {
+                version: "v123.456",
+              }
+            );
+  
+            it("should display it", async () => {
+              const res = await request(server)
+                .get(bonobUrl.append({ pathname: "/" }).pathname())
+                .set("accept-language", acceptLanguage)
+                .send();
+  
+              expect(res.status).toEqual(200);
+              expect(res.text).toContain('v123.456');
+            });
+          });
 
-          it("should display it", async () => {
-            const res = await request(server)
-              .get(bonobUrl.append({ pathname: "/" }).pathname())
-              .set("accept-language", acceptLanguage)
-              .send();
-
-            expect(res.status).toEqual(200);
-            expect(res.text).toMatch(/v123\.456/);
+          describe("when not specified", () => {
+            const server = makeServer(
+              SONOS_DISABLED,
+              aService(),
+              bonobUrl,
+              new InMemoryMusicService()
+            );
+  
+            it("should display the default", async () => {
+              const res = await request(server)
+                .get(bonobUrl.append({ pathname: "/" }).pathname())
+                .set("accept-language", acceptLanguage)
+                .send();
+  
+              expect(res.status).toEqual(200);
+              expect(res.text).toContain("v?");
+            });
           });
         });
 
diff --git a/tests/smapi_auth.test.ts b/tests/smapi_auth.test.ts
index 027a442..d4db82c 100644
--- a/tests/smapi_auth.test.ts
+++ b/tests/smapi_auth.test.ts
@@ -63,24 +63,25 @@ describe("auth", () => {
 
     const expiresIn = "1h";
     const secret = `secret-${uuid()}`;
-    const smapiLoginTokens = new JWTSmapiLoginTokens(clock, secret, expiresIn);
+    const key = uuid();
+    const smapiLoginTokens = new JWTSmapiLoginTokens(clock, secret, expiresIn, () => key);
 
     describe("issuing a new token", () => {
       it("should issue a token that can then be verified", () => {
-        const serviceToken = uuid();
+        const serviceToken = `service-token-${uuid()}`;
 
         const smapiToken = smapiLoginTokens.issue(serviceToken);
 
-        expect(smapiToken.token).toEqual(
-          jwt.sign(
-            {
-              serviceToken,
-              iat: Math.floor(clock.now().toDate().getDate() / 1000),
-            },
-            secret + SMAPI_TOKEN_VERSION + smapiToken.key,
-            { expiresIn }
-          )
+        const expected = jwt.sign(
+          {
+            serviceToken,
+            iat: clock.now().unix(),
+          },
+          secret + SMAPI_TOKEN_VERSION + key,
+          { expiresIn }
         );
+
+        expect(smapiToken.token).toEqual(expected);
         expect(smapiToken.token).not.toContain(serviceToken);
         expect(smapiToken.token).not.toContain(secret);
         expect(smapiToken.token).not.toContain(":");
@@ -100,7 +101,7 @@ describe("auth", () => {
             clock,
             secret,
             expiresIn,
-            () => uuid(),
+            uuid,
             SMAPI_TOKEN_VERSION
           );