diff --git a/package-lock.json b/package-lock.json
index bd82da6..fd1d8ac 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@egjs/list-differ",
-  "version": "1.0.0",
+  "version": "1.0.0-snapshot",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -1190,15 +1190,23 @@
       "dev": true
     },
     "ajv": {
-      "version": "6.10.2",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.2.tgz",
-      "integrity": "sha512-TXtUUEYHuaTEbLZWIKUr5pmBuhDLy+8KYtPYdcV8qC+pOZL+NKqYwvWSRrVXHn+ZmRRAu8vJTAznH7Oag6RVRw==",
+      "version": "6.12.6",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
+      "integrity": "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==",
       "dev": true,
       "requires": {
-        "fast-deep-equal": "^2.0.1",
+        "fast-deep-equal": "^3.1.1",
         "fast-json-stable-stringify": "^2.0.0",
         "json-schema-traverse": "^0.4.1",
         "uri-js": "^4.2.2"
+      },
+      "dependencies": {
+        "fast-deep-equal": {
+          "version": "3.1.3",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
+          "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
+          "dev": true
+        }
       }
     },
     "ansi-escapes": {
@@ -2130,9 +2138,9 @@
       }
     },
     "email-addresses": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/email-addresses/-/email-addresses-3.0.3.tgz",
-      "integrity": "sha512-kUlSC06PVvvjlMRpNIl3kR1NRXLEe86VQ7N0bQeaCZb2g+InShCeHQp/JvyYNTugMnRN2NvJhHlc3q12MWbbpg==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/email-addresses/-/email-addresses-3.1.0.tgz",
+      "integrity": "sha512-k0/r7GrWVL32kZlGwfPNgB2Y/mMXVTq/decgLczm/j34whdaspNrZO8CnXPf1laaHxI6ptUlsnAxN+UAPw+fzg==",
       "dev": true
     },
     "end-of-stream": {
@@ -2343,12 +2351,6 @@
       "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
       "dev": true
     },
-    "fast-deep-equal": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz",
-      "integrity": "sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=",
-      "dev": true
-    },
     "fast-json-stable-stringify": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz",
@@ -3080,19 +3082,30 @@
       }
     },
     "gh-pages": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/gh-pages/-/gh-pages-2.0.1.tgz",
-      "integrity": "sha512-uFlk3bukljeiWKQ2XvPfjcSi/ou7IfoDf2p+Fj672saLAr8bnOdFVqI/JSgrSgInKpCg5BksxEwGUl++dbg8Dg==",
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/gh-pages/-/gh-pages-2.2.0.tgz",
+      "integrity": "sha512-c+yPkNOPMFGNisYg9r4qvsMIjVYikJv7ImFOhPIVPt0+AcRUamZ7zkGRLHz7FKB0xrlZ+ddSOJsZv9XAFVXLmA==",
       "dev": true,
       "requires": {
         "async": "^2.6.1",
         "commander": "^2.18.0",
         "email-addresses": "^3.0.1",
         "filenamify-url": "^1.0.0",
-        "fs-extra": "^7.0.0",
-        "globby": "^6.1.0",
-        "graceful-fs": "^4.1.11",
-        "rimraf": "^2.6.2"
+        "fs-extra": "^8.1.0",
+        "globby": "^6.1.0"
+      },
+      "dependencies": {
+        "fs-extra": {
+          "version": "8.1.0",
+          "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-8.1.0.tgz",
+          "integrity": "sha512-yhlQgA6mnOJUKOsRUFsgJdQCvkKhcz8tlZG5HBQfReYZy46OwLcY+Zia0mtdHsOo9y/hP+CxMN0TU9QxoOtG4g==",
+          "dev": true,
+          "requires": {
+            "graceful-fs": "^4.2.0",
+            "jsonfile": "^4.0.0",
+            "universalify": "^0.1.0"
+          }
+        }
       }
     },
     "glob": {