diff --git a/src/bundles/communication/package.json b/src/bundles/communication/package.json
index 9bbc7a0f5..121264561 100644
--- a/src/bundles/communication/package.json
+++ b/src/bundles/communication/package.json
@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "private": true,
   "dependencies": {
-    "mqtt": "^4.3.7",
+    "mqtt": "^5.0.0",
     "os": "^0.1.2",
     "uniqid": "^5.4.0"
   },
diff --git a/yarn.lock b/yarn.lock
index da500ac1a..0a82899d0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1052,6 +1052,13 @@ __metadata:
   languageName: node
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+"@babel/runtime@npm:^7.28.4":
+  version: 7.28.4
+  resolution: "@babel/runtime@npm:7.28.4"
+  checksum: 10c0/792ce7af9750fb9b93879cc9d1db175701c4689da890e6ced242ea0207c9da411ccf16dc04e689cc01158b28d7898c40d75598f4559109f761c12ce01e959bf7
+  languageName: node
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 "@babel/template@npm:^7.27.1, @babel/template@npm:^7.27.2, @babel/template@npm:^7.3.3":
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   resolution: "@babel/template@npm:7.27.2"
@@ -4192,7 +4199,7 @@ __metadata:
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     "@sourceacademy/modules-buildtools": "workspace:^"
     "@types/uniqid": "npm:^5.3.4"
-    mqtt: "npm:^4.3.7"
+    mqtt: "npm:^5.0.0"
     os: "npm:^0.1.2"
     typescript: "npm:^5.8.2"
     uniqid: "npm:^5.4.0"
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+"@types/readable-stream@npm:^4.0.0, @types/readable-stream@npm:^4.0.21":
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+  resolution: "@types/readable-stream@npm:4.0.22"
+  dependencies:
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+  languageName: node
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+
 "@types/responselike@npm:^1.0.0":
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   resolution: "@types/responselike@npm:1.0.3"
@@ -5845,6 +5861,15 @@ __metadata:
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+"@types/ws@npm:^8.18.1":
+  version: 8.18.1
+  resolution: "@types/ws@npm:8.18.1"
+  dependencies:
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+  checksum: 10c0/61aff1129143fcc4312f083bc9e9e168aa3026b7dd6e70796276dcfb2c8211c4292603f9c4864fae702f2ed86e4abd4d38aa421831c2fd7f856c931a481afbab
+  languageName: node
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+
 "@types/yargs-parser@npm:*":
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   resolution: "@types/yargs-parser@npm:21.0.3"
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-  resolution: "bl@npm:4.1.0"
+"bl@npm:^6.0.8":
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+  resolution: "bl@npm:6.1.6"
   dependencies:
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+    "@types/readable-stream": "npm:^4.0.0"
+    buffer: "npm:^6.0.3"
     inherits: "npm:^2.0.4"
-    readable-stream: "npm:^3.4.0"
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+    readable-stream: "npm:^4.2.0"
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@@ -7305,6 +7331,18 @@ __metadata:
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+"broker-factory@npm:^3.1.10":
+  version: 3.1.10
+  resolution: "broker-factory@npm:3.1.10"
+  dependencies:
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+    fast-unique-numbers: "npm:^9.0.24"
+    tslib: "npm:^2.8.1"
+    worker-factory: "npm:^7.0.46"
+  checksum: 10c0/78b7812a1dbc0d8020f19a6171f3bf77c5e9abfefb0fbb4749b39b49ef3d48dba4f19fd093901ff92402a5b3d30d53f1ddf971393b6744ddc93c8696b4aa6e46
+  languageName: node
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+
 "brorand@npm:^1.0.1, brorand@npm:^1.1.0":
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+  resolution: "fast-unique-numbers@npm:9.0.24"
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+    tslib: "npm:^2.8.1"
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+  languageName: node
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 "fast-xml-parser@npm:^5.0.7":
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+"help-me@npm:^5.0.0":
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+  resolution: "help-me@npm:5.0.0"
+  checksum: 10c0/054c0e2e9ae2231c85ab5e04f75109b9d068ffcc54e58fb22079822a5ace8ff3d02c66fd45379c902ad5ab825e5d2e1451fcc2f7eab1eb49e7d488133ba4cacb
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+"ip-address@npm:^10.0.1":
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+  languageName: node
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 "ip-address@npm:^9.0.5":
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-  version: 6.10.0
-  resolution: "mqtt-packet@npm:6.10.0"
+"mqtt-packet@npm:^9.0.2":
+  version: 9.0.2
+  resolution: "mqtt-packet@npm:9.0.2"
   dependencies:
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-    debug: "npm:^4.1.1"
+    bl: "npm:^6.0.8"
+    debug: "npm:^4.3.4"
     process-nextick-args: "npm:^2.0.1"
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-  resolution: "mqtt@npm:4.3.8"
+"mqtt@npm:^5.0.0":
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+  resolution: "mqtt@npm:5.14.1"
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+    "@types/ws": "npm:^8.18.1"
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-    split2: "npm:^3.1.0"
-    ws: "npm:^7.5.5"
-    xtend: "npm:^4.0.2"
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+    help-me: "npm:^5.0.0"
+    lru-cache: "npm:^10.4.3"
+    minimist: "npm:^1.2.8"
+    mqtt-packet: "npm:^9.0.2"
+    number-allocator: "npm:^1.0.14"
+    readable-stream: "npm:^4.7.0"
+    rfdc: "npm:^1.4.1"
+    socks: "npm:^2.8.6"
+    split2: "npm:^4.2.0"
+    worker-timers: "npm:^8.0.23"
+    ws: "npm:^8.18.3"
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-    mqtt_pub: bin/pub.js
-    mqtt_sub: bin/sub.js
-  checksum: 10c0/cfc02b080c942bf5df8c64d2e12d0e7e5a35f2bd6c8c297a38cca8e3c5786d15f275f4b074c72768f8821acb1151e11f497b59f797662d9359387457bc5e355a
+    mqtt: build/bin/mqtt.js
+    mqtt_pub: build/bin/pub.js
+    mqtt_sub: build/bin/sub.js
+  checksum: 10c0/30acd3858223cb5e7b4aa2a725f47e51bd40eaca530c0e3b5cf96f7377a1f0018a7fe4d2bc2c10327973d46d5a2b8118560936de1a3d8a209c7f37ee914cfdbd
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 "remark-mdx@npm:^3.1.0":
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@@ -16441,6 +16454,16 @@ __metadata:
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+"socks@npm:^2.8.6":
+  version: 2.8.7
+  resolution: "socks@npm:2.8.7"
+  dependencies:
+    ip-address: "npm:^10.0.1"
+    smart-buffer: "npm:^4.2.0"
+  checksum: 10c0/2805a43a1c4bcf9ebf6e018268d87b32b32b06fbbc1f9282573583acc155860dc361500f89c73bfbb157caa1b4ac78059eac0ef15d1811eb0ca75e0bdadbc9d2
+  languageName: node
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+
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   resolution: "source-academy-utils@npm:1.0.2"
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+"split2@npm:^4.2.0":
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+  resolution: "split2@npm:4.2.0"
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+  resolution: "worker-factory@npm:7.0.46"
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+    tslib: "npm:^2.8.1"
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+  resolution: "worker-timers-broker@npm:8.0.11"
+  dependencies:
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+    broker-factory: "npm:^3.1.10"
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+  resolution: "worker-timers-worker@npm:9.0.11"
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+  languageName: node
+  linkType: hard
+
+"worker-timers@npm:^8.0.23":
+  version: 8.0.25
+  resolution: "worker-timers@npm:8.0.25"
+  dependencies:
+    "@babel/runtime": "npm:^7.28.4"
+    tslib: "npm:^2.8.1"
+    worker-timers-broker: "npm:^8.0.11"
+    worker-timers-worker: "npm:^9.0.11"
+  checksum: 10c0/85bc483bd17151df4ebbe66786dd56f0e0efd5e41e181359adaef64ad5f9fac541c23a6b8bc030c97c1fc705d924440211bf8261d65984756ddbe8f77a65a42e
+  languageName: node
+  linkType: hard
+
 "wrap-ansi-cjs@npm:wrap-ansi@^7.0.0":
   version: 7.0.0
   resolution: "wrap-ansi@npm:7.0.0"
@@ -18708,21 +18769,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ws@npm:^7.5.5":
-  version: 7.5.10
-  resolution: "ws@npm:7.5.10"
-  peerDependencies:
-    bufferutil: ^4.0.1
-    utf-8-validate: ^5.0.2
-  peerDependenciesMeta:
-    bufferutil:
-      optional: true
-    utf-8-validate:
-      optional: true
-  checksum: 10c0/bd7d5f4aaf04fae7960c23dcb6c6375d525e00f795dd20b9385902bd008c40a94d3db3ce97d878acc7573df852056ca546328b27b39f47609f80fb22a0a9b61d
-  languageName: node
-  linkType: hard
-
 "ws@npm:^8.18.0":
   version: 8.18.2
   resolution: "ws@npm:8.18.2"