diff --git a/package-lock.json b/package-lock.json
index 3dccb80..4e59900 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,10 +30,10 @@
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.8.1.tgz",
       "integrity": "sha512-eqxCp82P+JfqL683wwsL73XmFs1eG6qjw+RD3YHx+Jll1r0jNd4dh8QG9NYAeNGA/hnZjeEDgtTskgJULbxpWQ==",
       "requires": {
-        "fast-deep-equal": "2.0.1",
-        "fast-json-stable-stringify": "2.0.0",
-        "json-schema-traverse": "0.4.1",
-        "uri-js": "4.2.2"
+        "fast-deep-equal": "^2.0.1",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
       }
     },
     "asn1": {