diff --git a/package-lock.json b/package-lock.json
index 1d6c07b..7c94add 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -83,14 +83,13 @@
       "integrity": "sha512-I99sngh224D0M7XgW1s120zxCt3VYQ3IQsuw3P3jbq5GG4yc79+ZjyKznyOGIQrflfylLgcfekeZW/vk0yng6A=="
     },
     "ajv": {
-      "version": "6.12.1",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.1.tgz",
-      "integrity": "sha512-AUh2mDlJDAnzSRaKkMHopTD1GKwC1ApUq8oCzdjAOM5tavncgqWU+JoRu5Y3iYY0Q/euiU+1LWp0/O/QY8CcHw==",
+      "version": "6.12.6",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
+      "integrity": "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==",
       "requires": {
         "fast-deep-equal": "^3.1.1",
         "fast-json-stable-stringify": "^2.0.0",
         "json-schema-traverse": "^0.4.1",
-        "opencollective-postinstall": "^2.0.2",
         "uri-js": "^4.2.2"
       }
     },
@@ -512,11 +511,6 @@
         "wrappy": "1"
       }
     },
-    "opencollective-postinstall": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/opencollective-postinstall/-/opencollective-postinstall-2.0.2.tgz",
-      "integrity": "sha512-pVOEP16TrAO2/fjej1IdOyupJY8KDUM1CvsaScRbw6oddvpQoOfGk4ywha0HKKVAD6RkW4x6Q+tNBwhf3Bgpuw=="
-    },
     "path-is-absolute": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",