diff --git a/samples/package.json b/samples/package.json
index c2d1e6e1..637acc1a 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -14,7 +14,7 @@
   },
   "dependencies": {
     "@google-cloud/vision": "^1.11.0",
-    "mathjs": "^6.0.0",
+    "mathjs": "^7.0.0",
     "natural": "^2.0.0",
     "pureimage": "^0.2.1",
     "redis": "^3.0.0",