diff --git a/package.json b/package.json
index ce111eba..59548680 100644
--- a/package.json
+++ b/package.json
@@ -103,6 +103,6 @@
     "prettier": "^1.13.5",
     "proxyquire": "^2.1.0",
     "safe-buffer": "^5.1.2",
-    "sinon": "^6.0.0"
+    "sinon": "^7.0.0"
   }
 }
diff --git a/samples/package.json b/samples/package.json
index d99cc4f5..23569cbf 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -21,7 +21,7 @@
     "@google-cloud/nodejs-repo-tools": "^2.3.0",
     "ava": "^0.25.0",
     "proxyquire": "^2.0.1",
-    "sinon": "^6.0.1",
+    "sinon": "^7.0.0",
     "uuid": "^3.3.0"
   }
 }