diff --git a/samples/access_token_example/package.json b/samples/access_token_example/package.json
index 10c85bec..94d9cb32 100644
--- a/samples/access_token_example/package.json
+++ b/samples/access_token_example/package.json
@@ -19,7 +19,7 @@
     "test": "mocha --timeout=600000"
   },
   "dependencies": {
-    "@google-cloud/iot": "^2.0.0",
+    "@google-cloud/iot": "^3.0.0",
     "@google-cloud/pubsub": "^3.0.0",
     "@google-cloud/storage": "^6.0.0",
     "yargs": "^16.0.0",
diff --git a/samples/manager/package.json b/samples/manager/package.json
index 689ab475..e55aa937 100644
--- a/samples/manager/package.json
+++ b/samples/manager/package.json
@@ -19,7 +19,7 @@
     "test": "mocha --timeout=600000"
   },
   "dependencies": {
-    "@google-cloud/iot": "^2.0.0",
+    "@google-cloud/iot": "^3.0.0",
     "@google-cloud/pubsub": "^3.0.0",
     "yargs": "^16.0.0"
   },
diff --git a/samples/mqtt_example/package.json b/samples/mqtt_example/package.json
index 2f548c9b..27f3efdf 100644
--- a/samples/mqtt_example/package.json
+++ b/samples/mqtt_example/package.json
@@ -19,7 +19,7 @@
     "test": "mocha --timeout=600000"
   },
   "dependencies": {
-    "@google-cloud/iot": "^2.0.0",
+    "@google-cloud/iot": "^3.0.0",
     "@google-cloud/pubsub": "^3.0.0",
     "jsonwebtoken": "^8.5.0",
     "mqtt": "^4.0.0",