diff --git a/dialogflow-webhook/package-lock.json b/dialogflow-webhook/package-lock.json
index 39edaf1..65ec538 100644
--- a/dialogflow-webhook/package-lock.json
+++ b/dialogflow-webhook/package-lock.json
@@ -163,9 +163,9 @@
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     },
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-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
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+      "version": "5.7.4",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
+      "integrity": "sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg=="
     },
     "acorn-es7-plugin": {
       "version": "1.1.7",