diff --git a/2.6.0/package.json b/2.6.0/package.json
index 8590e87..f72c365 100644
--- a/2.6.0/package.json
+++ b/2.6.0/package.json
@@ -135,7 +135,7 @@
     "selenium-server": "^2.53.1",
     "serialize-javascript": "^1.3.0",
     "shelljs": "^0.8.1",
-    "terser": "^3.10.2",
+    "terser": "^4.8.1",
     "typescript": "^3.1.3",
     "webpack": "^4.22.0",
     "weex-js-runtime": "^0.23.6",
diff --git a/2.6.0/yarn.lock b/2.6.0/yarn.lock
index 2a370eb..edf826f 100644
--- a/2.6.0/yarn.lock
+++ b/2.6.0/yarn.lock
@@ -1948,10 +1948,10 @@ commander@2.9.0:
   dependencies:
     graceful-readlink ">= 1.0.0"
 
-commander@^2.14.1, commander@^2.9.0:
-  version "2.19.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.19.0.tgz#f6198aa84e5b83c46054b94ddedbfed5ee9ff12a"
-  integrity sha512-6tvAOO+D6OENvRAh524Dh9jcfKTYDQAqvqezbCW82xj5X0pSrcpxtvRKHLG0yBY6SD7PSDrJaj+0AiOcKVd1Xg==
+commander@^2.14.1, commander@^2.20.0, commander@^2.9.0:
+  version "2.20.3"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
+  integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
 
 commander@~2.17.1:
   version "2.17.1"
@@ -7352,10 +7352,10 @@ source-map-resolve@^0.5.0, source-map-resolve@^0.5.2:
     source-map-url "^0.4.0"
     urix "^0.1.0"
 
-source-map-support@^0.5.9, source-map-support@~0.5.6:
-  version "0.5.9"
-  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.9.tgz#41bc953b2534267ea2d605bccfa7bfa3111ced5f"
-  integrity sha512-gR6Rw4MvUlYy83vP0vxoVNzM6t8MUXqNuRsuBmBHQDu1Fh6X015FrLdgoDKcNdkwGubozq0P4N0Q37UyFVr1EA==
+source-map-support@^0.5.9, source-map-support@~0.5.12, source-map-support@~0.5.6:
+  version "0.5.21"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.21.tgz#04fe7c7f9e1ed2d662233c28cb2b35b9f63f6e4f"
+  integrity sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==
   dependencies:
     buffer-from "^1.0.0"
     source-map "^0.6.0"
@@ -7720,7 +7720,7 @@ terser-webpack-plugin@^1.1.0:
     webpack-sources "^1.1.0"
     worker-farm "^1.5.2"
 
-terser@^3.10.2, terser@^3.8.1:
+terser@^3.8.1:
   version "3.14.1"
   resolved "https://registry.yarnpkg.com/terser/-/terser-3.14.1.tgz#cc4764014af570bc79c79742358bd46926018a32"
   integrity sha512-NSo3E99QDbYSMeJaEk9YW2lTg3qS9V0aKGlb+PlOrei1X02r1wSBHCNX/O+yeTRFSWPKPIGj6MqvvdqV4rnVGw==
@@ -7729,6 +7729,15 @@ terser@^3.10.2, terser@^3.8.1:
     source-map "~0.6.1"
     source-map-support "~0.5.6"
 
+terser@^4.8.1:
+  version "4.8.1"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-4.8.1.tgz#a00e5634562de2239fd404c649051bf6fc21144f"
+  integrity sha512-4GnLC0x667eJG0ewJTa6z/yXrbLGv80D9Ru6HIpCQmO+Q4PfEtBFi0ObSckqwL6VyQv/7ENJieXHo2ANmdQwgw==
+  dependencies:
+    commander "^2.20.0"
+    source-map "~0.6.1"
+    source-map-support "~0.5.12"
+
 test-exclude@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-5.0.0.tgz#cdce7cece785e0e829cd5c2b27baf18bc583cfb7"