diff --git a/README.md b/README.md
index c79fb20..e0df817 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,11 @@ or
 npm run package-x86
 ```
 
+for linux:
+```
+npm run package-l64
+```
+
 for osx package(must under osx):
 ```
 npm run package-osx
@@ -60,6 +65,6 @@ npm run package-osx
 
 # License
 
-Copyright (c) 2017-present i38.me
+Copyright (c) 2017-present x1y9
 
 [MIT License](http://en.wikipedia.org/wiki/MIT_License)
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index aaf765d..b282ad3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "justmd",
-  "version": "1.1.2",
+  "version": "1.2.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -110,7 +110,8 @@
       "version": "7.10.14",
       "resolved": "https://registry.npm.taobao.org/@types/node/download/@types/node-7.10.14.tgz",
       "integrity": "sha1-BvpzGbgTG5aajaShTEh+byirrPc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "@types/yauzl": {
       "version": "2.9.1",
@@ -124,7 +125,7 @@
     },
     "ajv": {
       "version": "6.12.6",
-      "resolved": "https://registry.npm.taobao.org/ajv/download/ajv-6.12.6.tgz",
+      "resolved": "https://registry.nlark.com/ajv/download/ajv-6.12.6.tgz",
       "integrity": "sha1-uvWmLoArB9l3A0WG+MO69a3ybfQ=",
       "dev": true,
       "requires": {
@@ -561,31 +562,62 @@
       }
     },
     "electron": {
-      "version": "1.7.8",
-      "resolved": "https://registry.nlark.com/electron/download/electron-1.7.8.tgz",
-      "integrity": "sha1-J7eRpolRcafVKZG5lELNvRCjU50=",
+      "version": "4.2.12",
+      "resolved": "https://registry.nlark.com/electron/download/electron-4.2.12.tgz",
+      "integrity": "sha1-jokmpqZlTN5esGEpUv7ZilaUGHU=",
       "dev": true,
       "requires": {
-        "@types/node": "^7.0.18",
-        "electron-download": "^3.0.1",
+        "@types/node": "^10.12.18",
+        "electron-download": "^4.1.0",
         "extract-zip": "^1.0.3"
+      },
+      "dependencies": {
+        "@types/node": {
+          "version": "10.17.60",
+          "resolved": "https://registry.nlark.com/@types/node/download/@types/node-10.17.60.tgz",
+          "integrity": "sha1-NfPWIT2u2V2n8Pc+dbzGmA6QWXs=",
+          "dev": true
+        }
       }
     },
     "electron-download": {
-      "version": "3.3.0",
-      "resolved": "https://registry.nlark.com/electron-download/download/electron-download-3.3.0.tgz",
-      "integrity": "sha1-LP1U1pZsAZxNSa1l++Zcyc3vaMg=",
+      "version": "4.1.1",
+      "resolved": "https://registry.nlark.com/electron-download/download/electron-download-4.1.1.tgz",
+      "integrity": "sha1-AuaVVnBcxFblIPngNVVu1aAV6+g=",
       "dev": true,
       "requires": {
-        "debug": "^2.2.0",
-        "fs-extra": "^0.30.0",
-        "home-path": "^1.0.1",
+        "debug": "^3.0.0",
+        "env-paths": "^1.0.0",
+        "fs-extra": "^4.0.1",
         "minimist": "^1.2.0",
-        "nugget": "^2.0.0",
-        "path-exists": "^2.1.0",
-        "rc": "^1.1.2",
-        "semver": "^5.3.0",
-        "sumchecker": "^1.2.0"
+        "nugget": "^2.0.1",
+        "path-exists": "^3.0.0",
+        "rc": "^1.2.1",
+        "semver": "^5.4.1",
+        "sumchecker": "^2.0.2"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "3.2.7",
+          "resolved": "https://registry.npm.taobao.org/debug/download/debug-3.2.7.tgz?cache=0&sync_timestamp=1614330710870&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fdebug%2Fdownload%2Fdebug-3.2.7.tgz",
+          "integrity": "sha1-clgLfpFF+zm2Z2+cXl+xALk0F5o=",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "env-paths": {
+          "version": "1.0.0",
+          "resolved": "https://registry.nlark.com/env-paths/download/env-paths-1.0.0.tgz",
+          "integrity": "sha1-QWgTO0K7BcOKNbGuQ5fIKYqzaeA=",
+          "dev": true
+        },
+        "ms": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npm.taobao.org/ms/download/ms-2.1.3.tgz?cache=0&sync_timestamp=1607433899126&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fms%2Fdownload%2Fms-2.1.3.tgz",
+          "integrity": "sha1-V0yBOM4dK1hh8LRFedut1gxmFbI=",
+          "dev": true
+        }
       }
     },
     "electron-notarize": {
@@ -795,12 +827,6 @@
       "dev": true,
       "optional": true
     },
-    "es6-promise": {
-      "version": "4.2.8",
-      "resolved": "https://registry.npm.taobao.org/es6-promise/download/es6-promise-4.2.8.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fes6-promise%2Fdownload%2Fes6-promise-4.2.8.tgz",
-      "integrity": "sha1-TrIVlMlyvEBVPSduUQU5FD21Pgo=",
-      "dev": true
-    },
     "escape-string-regexp": {
       "version": "4.0.0",
       "resolved": "https://registry.nlark.com/escape-string-regexp/download/escape-string-regexp-4.0.0.tgz",
@@ -878,6 +904,17 @@
       "requires": {
         "path-exists": "^2.0.0",
         "pinkie-promise": "^2.0.0"
+      },
+      "dependencies": {
+        "path-exists": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npm.taobao.org/path-exists/download/path-exists-2.1.0.tgz",
+          "integrity": "sha1-D+tsZPD8UY2adU3V77YscCJ2H0s=",
+          "dev": true,
+          "requires": {
+            "pinkie-promise": "^2.0.0"
+          }
+        }
       }
     },
     "flora-colossus": {
@@ -945,16 +982,14 @@
       }
     },
     "fs-extra": {
-      "version": "0.30.0",
-      "resolved": "https://registry.npm.taobao.org/fs-extra/download/fs-extra-0.30.0.tgz?cache=0&sync_timestamp=1611075481805&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Ffs-extra%2Fdownload%2Ffs-extra-0.30.0.tgz",
-      "integrity": "sha1-8jP/zAjU2n1DLapEl3aYnbHfk/A=",
+      "version": "4.0.3",
+      "resolved": "https://registry.nlark.com/fs-extra/download/fs-extra-4.0.3.tgz",
+      "integrity": "sha1-DYUhIuW8W+tFP7Ao6cDJvzY0DJQ=",
       "dev": true,
       "requires": {
         "graceful-fs": "^4.1.2",
-        "jsonfile": "^2.1.0",
-        "klaw": "^1.0.0",
-        "path-is-absolute": "^1.0.0",
-        "rimraf": "^2.2.8"
+        "jsonfile": "^4.0.0",
+        "universalify": "^0.1.0"
       }
     },
     "fs.realpath": {
@@ -1227,12 +1262,6 @@
         "function-bind": "^1.1.1"
       }
     },
-    "home-path": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npm.taobao.org/home-path/download/home-path-1.0.7.tgz",
-      "integrity": "sha1-z3fXM5/z3cM0eiPFJhKx9eflYxM=",
-      "dev": true
-    },
     "hosted-git-info": {
       "version": "2.8.9",
       "resolved": "https://registry.nlark.com/hosted-git-info/download/hosted-git-info-2.8.9.tgz",
@@ -1381,9 +1410,9 @@
       "dev": true
     },
     "jsonfile": {
-      "version": "2.4.0",
-      "resolved": "https://registry.npm.taobao.org/jsonfile/download/jsonfile-2.4.0.tgz?cache=0&sync_timestamp=1604161876665&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fjsonfile%2Fdownload%2Fjsonfile-2.4.0.tgz",
-      "integrity": "sha1-NzaitCi4e72gzIO1P6PWM6NcKug=",
+      "version": "4.0.0",
+      "resolved": "https://registry.npm.taobao.org/jsonfile/download/jsonfile-4.0.0.tgz?cache=0&sync_timestamp=1604161876665&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fjsonfile%2Fdownload%2Fjsonfile-4.0.0.tgz",
+      "integrity": "sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=",
       "dev": true,
       "requires": {
         "graceful-fs": "^4.1.6"
@@ -1416,15 +1445,6 @@
         "json-buffer": "3.0.0"
       }
     },
-    "klaw": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npm.taobao.org/klaw/download/klaw-1.3.1.tgz",
-      "integrity": "sha1-QIhDO0azsbolnXh4XY6W9zugJDk=",
-      "dev": true,
-      "requires": {
-        "graceful-fs": "^4.1.9"
-      }
-    },
     "load-json-file": {
       "version": "1.1.0",
       "resolved": "https://registry.npm.taobao.org/load-json-file/download/load-json-file-1.1.0.tgz",
@@ -1512,7 +1532,7 @@
     },
     "meow": {
       "version": "3.7.0",
-      "resolved": "https://registry.npm.taobao.org/meow/download/meow-3.7.0.tgz",
+      "resolved": "https://registry.nlark.com/meow/download/meow-3.7.0.tgz",
       "integrity": "sha1-cstmi0JSKCkKu/qFaJJYcwioAfs=",
       "dev": true,
       "requires": {
@@ -1714,13 +1734,10 @@
       }
     },
     "path-exists": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npm.taobao.org/path-exists/download/path-exists-2.1.0.tgz",
-      "integrity": "sha1-D+tsZPD8UY2adU3V77YscCJ2H0s=",
-      "dev": true,
-      "requires": {
-        "pinkie-promise": "^2.0.0"
-      }
+      "version": "3.0.0",
+      "resolved": "https://registry.npm.taobao.org/path-exists/download/path-exists-3.0.0.tgz",
+      "integrity": "sha1-zg6+ql94yxiSXqfYENe1mwEP1RU=",
+      "dev": true
     },
     "path-is-absolute": {
       "version": "1.0.1",
@@ -1915,7 +1932,7 @@
     },
     "redent": {
       "version": "1.0.0",
-      "resolved": "https://registry.npm.taobao.org/redent/download/redent-1.0.0.tgz",
+      "resolved": "https://registry.nlark.com/redent/download/redent-1.0.0.tgz?cache=0&sync_timestamp=1620069702182&other_urls=https%3A%2F%2Fregistry.nlark.com%2Fredent%2Fdownload%2Fredent-1.0.0.tgz",
       "integrity": "sha1-z5Fqsf1fHxbfsggi3W7H9zDCr94=",
       "dev": true,
       "requires": {
@@ -1925,7 +1942,7 @@
     },
     "repeating": {
       "version": "2.0.1",
-      "resolved": "https://registry.npm.taobao.org/repeating/download/repeating-2.0.1.tgz",
+      "resolved": "https://registry.nlark.com/repeating/download/repeating-2.0.1.tgz",
       "integrity": "sha1-UhTFOpJtNVJwdSf7q0FdvAjQbdo=",
       "dev": true,
       "requires": {
@@ -1979,15 +1996,6 @@
         "lowercase-keys": "^1.0.0"
       }
     },
-    "rimraf": {
-      "version": "2.7.1",
-      "resolved": "https://registry.npm.taobao.org/rimraf/download/rimraf-2.7.1.tgz?cache=0&sync_timestamp=1581257110269&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Frimraf%2Fdownload%2Frimraf-2.7.1.tgz",
-      "integrity": "sha1-NXl/E6f9rcVmFCwp1PB8ytSD4+w=",
-      "dev": true,
-      "requires": {
-        "glob": "^7.1.3"
-      }
-    },
     "roarr": {
       "version": "2.15.4",
       "resolved": "https://registry.npm.taobao.org/roarr/download/roarr-2.15.4.tgz",
@@ -2152,7 +2160,7 @@
     },
     "strip-indent": {
       "version": "1.0.1",
-      "resolved": "https://registry.npm.taobao.org/strip-indent/download/strip-indent-1.0.1.tgz",
+      "resolved": "https://registry.nlark.com/strip-indent/download/strip-indent-1.0.1.tgz",
       "integrity": "sha1-DHlipq3vp7vUrDZkYKY4VSrhoKI=",
       "dev": true,
       "requires": {
@@ -2183,13 +2191,12 @@
       }
     },
     "sumchecker": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npm.taobao.org/sumchecker/download/sumchecker-1.3.1.tgz",
-      "integrity": "sha1-ebs7RFbdBPGOvbwNcDodHa7FEF0=",
+      "version": "2.0.2",
+      "resolved": "https://registry.npm.taobao.org/sumchecker/download/sumchecker-2.0.2.tgz",
+      "integrity": "sha1-D0LBDl0F2l1C7qPlbDOZo31sWz4=",
       "dev": true,
       "requires": {
-        "debug": "^2.2.0",
-        "es6-promise": "^4.0.5"
+        "debug": "^2.2.0"
       }
     },
     "throttleit": {
diff --git a/package.json b/package.json
index 9b3f299..b16ca6a 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "justmd",
   "productName": "justmd",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "just markdown editor",
   "main": "main.js",
   "scripts": {
@@ -12,7 +12,7 @@
     "package-l64": "electron-packager . --prune --overwrite --asar --out=dist --platform=linux --arch=x64  --icon images/justmd.png"
   },
   "devDependencies": {
-    "electron": "1.7.8",
+    "electron": "^4.2.12",
     "electron-packager": "^15.2.0"
   }
 }