diff --git a/samples/access_token_example/package.json b/samples/access_token_example/package.json
index 5d799a2a..dc0ba908 100644
--- a/samples/access_token_example/package.json
+++ b/samples/access_token_example/package.json
@@ -20,7 +20,7 @@
   },
   "dependencies": {
     "@google-cloud/iot": "^2.0.0",
-    "@google-cloud/pubsub": "^2.0.0",
+    "@google-cloud/pubsub": "^3.0.0",
     "@google-cloud/storage": "^5.0.0",
     "yargs": "^16.0.0",
     "jsonwebtoken": "^8.5.1",
diff --git a/samples/http_example/package.json b/samples/http_example/package.json
index c353efc1..942a9895 100644
--- a/samples/http_example/package.json
+++ b/samples/http_example/package.json
@@ -24,7 +24,7 @@
     "yargs": "^16.0.0"
   },
   "devDependencies": {
-    "@google-cloud/pubsub": "^2.0.0",
+    "@google-cloud/pubsub": "^3.0.0",
     "mocha": "^8.1.1",
     "uuid": "^8.0.0"
   }
diff --git a/samples/manager/package.json b/samples/manager/package.json
index fb92d60a..689ab475 100644
--- a/samples/manager/package.json
+++ b/samples/manager/package.json
@@ -20,7 +20,7 @@
   },
   "dependencies": {
     "@google-cloud/iot": "^2.0.0",
-    "@google-cloud/pubsub": "^2.0.0",
+    "@google-cloud/pubsub": "^3.0.0",
     "yargs": "^16.0.0"
   },
   "devDependencies": {
diff --git a/samples/mqtt_example/package.json b/samples/mqtt_example/package.json
index ea5c957d..2f548c9b 100644
--- a/samples/mqtt_example/package.json
+++ b/samples/mqtt_example/package.json
@@ -20,7 +20,7 @@
   },
   "dependencies": {
     "@google-cloud/iot": "^2.0.0",
-    "@google-cloud/pubsub": "^2.0.0",
+    "@google-cloud/pubsub": "^3.0.0",
     "jsonwebtoken": "^8.5.0",
     "mqtt": "^4.0.0",
     "yargs": "^16.0.0"
diff --git a/samples/package.json b/samples/package.json
index 082cbf43..c5a73b47 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -16,7 +16,7 @@
   },
   "dependencies": {
     "@google-cloud/iot": "^2.5.1",
-    "@google-cloud/pubsub": "^2.0.0",
+    "@google-cloud/pubsub": "^3.0.0",
     "@google-cloud/storage": "^5.0.0"
   },
   "devDependencies": {
diff --git a/samples/scripts/package.json b/samples/scripts/package.json
index c65318ff..e652b538 100644
--- a/samples/scripts/package.json
+++ b/samples/scripts/package.json
@@ -8,6 +8,6 @@
     "node": ">=8.0.0"
   },
   "dependencies": {
-    "@google-cloud/pubsub": "^2.0.0"
+    "@google-cloud/pubsub": "^3.0.0"
   }
 }