diff --git a/packages/google-cloud-bigquery-reservation/package.json b/packages/google-cloud-bigquery-reservation/package.json
index 025f0024f1f..b4e43f01829 100644
--- a/packages/google-cloud-bigquery-reservation/package.json
+++ b/packages/google-cloud-bigquery-reservation/package.json
@@ -42,7 +42,7 @@
     "google-gax": "^2.6.2"
   },
   "devDependencies": {
-    "@types/mocha": "^7.0.2",
+    "@types/mocha": "^8.0.0",
     "@types/node": "^14.0.19",
     "@types/sinon": "^9.0.4",
     "c8": "^7.2.0",
diff --git a/packages/google-cloud-bigquery-reservation/samples/package.json b/packages/google-cloud-bigquery-reservation/samples/package.json
index 250d987886b..a7822ac4517 100644
--- a/packages/google-cloud-bigquery-reservation/samples/package.json
+++ b/packages/google-cloud-bigquery-reservation/samples/package.json
@@ -18,6 +18,6 @@
   "devDependencies": {
     "c8": "^7.1.0",
     "chai": "^4.2.0",
-    "mocha": "^7.1.0"
+    "mocha": "^8.0.0"
   }
 }