diff --git a/packages/google-cloud-bigquery-datatransfer/package.json b/packages/google-cloud-bigquery-datatransfer/package.json
index 157e0abca44..cea2642b653 100644
--- a/packages/google-cloud-bigquery-datatransfer/package.json
+++ b/packages/google-cloud-bigquery-datatransfer/package.json
@@ -50,7 +50,7 @@
     "jsdoc-fresh": "^1.0.1",
     "jsdoc-region-tag": "^1.0.2",
     "linkinator": "^1.5.0",
-    "mocha": "^6.1.4",
+    "mocha": "^7.0.0",
     "c8": "^7.0.0",
     "power-assert": "^1.6.1",
     "prettier": "^1.17.1"
diff --git a/packages/google-cloud-bigquery-datatransfer/samples/package.json b/packages/google-cloud-bigquery-datatransfer/samples/package.json
index 14b782a56b9..d844b2d7c25 100644
--- a/packages/google-cloud-bigquery-datatransfer/samples/package.json
+++ b/packages/google-cloud-bigquery-datatransfer/samples/package.json
@@ -18,6 +18,6 @@
   },
   "devDependencies": {
     "chai": "^4.2.0",
-    "mocha": "^6.0.0"
+    "mocha": "^7.0.0"
   }
 }