diff --git a/example/package-lock.json b/example/package-lock.json
index 4abd368..e8fa82a 100644
--- a/example/package-lock.json
+++ b/example/package-lock.json
@@ -515,9 +515,9 @@
       "integrity": "sha512-+Ryf6g3BKoRc7jfp7ad8tM4TtMiaWvbF/1/sQcZPkkS7ag3D5nMBCe2UfOTONtAkaG0tO0ij3C5Lwmf1EiyjHg=="
     },
     "async": {
-      "version": "2.6.3",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
-      "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "dev": true,
       "requires": {
         "lodash": "^4.17.14"
@@ -14312,7 +14312,13 @@
           }
         },
         "prop-types": {
-          "version": ""
+          "version": "15.8.1",
+          "resolved": "https://registry.npmjs.org/prop-types/-/prop-types-15.8.1.tgz",
+          "integrity": "sha512-oj87CgZICdulUohogVAR7AjlC0327U4el4L6eAvOqCeudMDVU0NThNaV+b9Df4dXgSP1gXMTnPdhfe/2qDH5cg==",
+          "requires": {
+            "loose-envify": "^1.4.0",
+            "object-assign": "^4.1.1"
+          }
         },
         "pseudomap": {
           "version": "1.0.2",