diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 7327acb9..2738e252 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -35,3 +35,16 @@ jobs:
       - name: The job has failed
         if: ${{ failure() }}
         run: cat server/prosody.err
+
+  test-deno:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Setup Deno
+        uses: denoland/setup-deno@v2
+        with:
+          deno-version: v2.x
+
+      - name: Run Deno tests
+        run: deno test --allow-read test/deno.test.js
diff --git a/test/deno.test.js b/test/deno.test.js
new file mode 100644
index 00000000..1004ee03
--- /dev/null
+++ b/test/deno.test.js
@@ -0,0 +1,49 @@
+// Smoke tests to verify xmpp.js core packages work with Deno runtime
+import { jid } from "../packages/jid/index.js";
+import id from "../packages/id/index.js";
+
+function assertEquals(actual, expected, message) {
+  if (actual !== expected) {
+    throw new Error(message || `Expected ${expected}, got ${actual}`);
+  }
+}
+
+function assertNotEquals(actual, expected, message) {
+  if (actual === expected) {
+    throw new Error(message || `Expected values to be different, but both were ${actual}`);
+  }
+}
+
+Deno.test("JID - basic address handling", () => {
+  const addr = jid("foo@bar/baz");
+  assertEquals(addr.toString(), "foo@bar/baz");
+  assertEquals(addr.local, "foo");
+  assertEquals(addr.domain, "bar");
+  assertEquals(addr.resource, "baz");
+});
+
+Deno.test("JID - parsing", () => {
+  const parsed = jid("user@example.com");
+  assertEquals(parsed.local, "user");
+  assertEquals(parsed.domain, "example.com");
+});
+
+Deno.test("JID - equality", () => {
+  const addr1 = jid("user@example.com/resource");
+  const addr2 = jid("user@example.com/resource");
+  assertEquals(addr1.equals(addr2), true);
+});
+
+Deno.test("JID - bare address", () => {
+  const withResource = jid("user@example.com/mobile");
+  const bare = withResource.bare();
+  assertEquals(bare.toString(), "user@example.com");
+});
+
+Deno.test("ID - unique generation", () => {
+  const id1 = id();
+  const id2 = id();
+  assertEquals(typeof id1, "string");
+  assertEquals(id1.length > 0, true);
+  assertNotEquals(id1, id2);
+});