diff --git a/example/package-lock.json b/example/package-lock.json
index 4abd368..4ab450f 100644
--- a/example/package-lock.json
+++ b/example/package-lock.json
@@ -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",
@@ -18076,9 +18082,9 @@
       "integrity": "sha512-mRz/m/JVscCrkMyPqHc/bczi3OQHkLTqXHEFu0zDhK/qfv3UcOA4SVmRCLmos4bhjr9ekVQubj/R7waKapmiQg=="
     },
     "shelljs": {
-      "version": "0.8.4",
-      "resolved": "https://registry.npmjs.org/shelljs/-/shelljs-0.8.4.tgz",
-      "integrity": "sha512-7gk3UZ9kOfPLIAbslLzyWeGiEqx9e3rxwZM0KE6EL8GlGwjym9Mrlx5/p33bWTu9YG6vcS4MBxYZDHYr5lr8BQ==",
+      "version": "0.8.5",
+      "resolved": "https://registry.npmjs.org/shelljs/-/shelljs-0.8.5.tgz",
+      "integrity": "sha512-TiwcRcrkhHvbrZbnRcFYMLl30Dfov3HKqzp5tO5b4pt6G/SezKcYhmDg15zXVBswHmctSAQKznqNW2LO5tTDow==",
       "dev": true,
       "requires": {
         "glob": "^7.0.0",