diff --git a/HISTORY.md b/HISTORY.md
index 3cfc42e..4b4b97c 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -3,6 +3,11 @@
 https://github.com/josdejong/jsoneditor
 
 
+## not yet published, version 8.6.7
+
+- Update dependencies to `ajv@6.12.2`.
+
+
 ## 2020-04-21, version 8.6.6
 
 - Fix #969: adding a new property to an empty object or array is broken.
diff --git a/package-lock.json b/package-lock.json
index 2c45807..dc05efe 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1165,14 +1165,13 @@
       "dev": true
     },
     "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": "6.12.2",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.2.tgz",
+      "integrity": "sha512-k+V+hzjm5q/Mr8ef/1Y9goCmlsK4I6Sm74teeyGvFk1XrOsbsKLjEdrvny42CZ+a8sXbk8KWpY/bDwS+FLL2UQ==",
       "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"
       }
     },
@@ -1749,6 +1748,12 @@
         "inherits": "~2.0.0"
       }
     },
+    "bluebird": {
+      "version": "3.7.2",
+      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.7.2.tgz",
+      "integrity": "sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg==",
+      "dev": true
+    },
     "bn.js": {
       "version": "4.11.8",
       "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.8.tgz",
@@ -1959,12 +1964,6 @@
         "y18n": "^4.0.0"
       },
       "dependencies": {
-        "bluebird": {
-          "version": "3.7.2",
-          "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.7.2.tgz",
-          "integrity": "sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg==",
-          "dev": true
-        },
         "lru-cache": {
           "version": "5.1.1",
           "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-5.1.1.tgz",
@@ -7218,11 +7217,6 @@
         "mimic-fn": "^2.1.0"
       }
     },
-    "opencollective-postinstall": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/opencollective-postinstall/-/opencollective-postinstall-2.0.2.tgz",
-      "integrity": "sha512-pVOEP16TrAO2/fjej1IdOyupJY8KDUM1CvsaScRbw6oddvpQoOfGk4ywha0HKKVAD6RkW4x6Q+tNBwhf3Bgpuw=="
-    },
     "optionator": {
       "version": "0.8.3",
       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.8.3.tgz",
@@ -9729,16 +9723,16 @@
       "dev": true
     },
     "webpack": {
-      "version": "4.42.1",
-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.42.1.tgz",
-      "integrity": "sha512-SGfYMigqEfdGchGhFFJ9KyRpQKnipvEvjc1TwrXEPCM6H5Wywu10ka8o3KGrMzSMxMQKt8aCHUFh5DaQ9UmyRg==",
+      "version": "4.43.0",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.43.0.tgz",
+      "integrity": "sha512-GW1LjnPipFW2Y78OOab8NJlCflB7EFskMih2AHdvjbpKMeDJqEgSx24cXXXiPS65+WSwVyxtDsJH6jGX2czy+g==",
       "dev": true,
       "requires": {
         "@webassemblyjs/ast": "1.9.0",
         "@webassemblyjs/helper-module-context": "1.9.0",
         "@webassemblyjs/wasm-edit": "1.9.0",
         "@webassemblyjs/wasm-parser": "1.9.0",
-        "acorn": "^6.2.1",
+        "acorn": "^6.4.1",
         "ajv": "^6.10.2",
         "ajv-keywords": "^3.4.1",
         "chrome-trace-event": "^1.0.2",
@@ -9755,7 +9749,7 @@
         "schema-utils": "^1.0.0",
         "tapable": "^1.1.3",
         "terser-webpack-plugin": "^1.4.3",
-        "watchpack": "^1.6.0",
+        "watchpack": "^1.6.1",
         "webpack-sources": "^1.4.1"
       },
       "dependencies": {
diff --git a/package.json b/package.json
index 3ff84dd..2064cef 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
   },
   "dependencies": {
     "ace-builds": "^1.4.11",
-    "ajv": "^6.12.1",
+    "ajv": "^6.12.2",
     "javascript-natural-sort": "^0.7.1",
     "jmespath": "^0.15.0",
     "json-source-map": "^0.6.1",
@@ -53,7 +53,7 @@
     "mocha": "7.1.1",
     "standard": "14.3.3",
     "uglify-js": "3.9.1",
-    "webpack": "4.42.1"
+    "webpack": "4.43.0"
   },
   "files": [
     "dist",