diff --git a/packages/caliper-core/package.json b/packages/caliper-core/package.json
index 6879b364c..5b6d95d9e 100644
--- a/packages/caliper-core/package.json
+++ b/packages/caliper-core/package.json
@@ -28,7 +28,7 @@
         "express": "4.17.1",
         "js-yaml": "^3.13.1",
         "mustache": "^2.3.0",
-        "mqtt": "3.0.0",
+        "mqtt": "4.2.7",
         "nconf": "^0.10.0",
         "nconf-yaml": "^1.0.2",
         "pidusage": "^1.1.6",