diff --git a/README.md b/README.md
index a9cb1d1..258ec5a 100644
--- a/README.md
+++ b/README.md
@@ -86,7 +86,7 @@ apollo.setEnv();
 
 ## TODO
   
- - [] 支持局部配置热更新
+ - [X] 支持局部配置热更新
 
 ## License
 
diff --git a/package-lock.json b/package-lock.json
index 26b4543..b32adad 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "node-apollo",
-  "version": "1.1.8",
+  "version": "1.2.0",
   "lockfileVersion": 1,
   "requires": true,
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@@ -23,9 +23,9 @@
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-        "escodegen": "1.9.1",
+        "ast-types": "0.11.5",
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       "integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0="
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@@ -140,9 +148,9 @@
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@@ -204,78 +212,64 @@
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         "ftp": "0.3.10",
-        "readable-stream": "2.3.5"
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-      "integrity": "sha1-CgAsyFcHGSp+eUbO7cERVfYOxzY=",
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-        "debug": "2.6.9",
-        "extend": "3.0.1"
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@@ -288,9 +282,12 @@
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@@ -397,33 +406,27 @@
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@@ -450,46 +453,76 @@
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+      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+    },
+    "safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
     },
     "semver": {
       "version": "5.5.0",
@@ -519,9 +557,9 @@
       "integrity": "sha512-4SJ3dm0WAwWy/NVeioZh5AntkdJoWKxHxcmyP622fOkgHa4z3R0TdBJICINyaSDE6uNwVc8gZr+ZinwZAH4xIA=="
     },
     "setprototypeof": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.0.3.tgz",
-      "integrity": "sha1-ZlZ+NwQ+608E2RvWWMDL77VbjgQ="
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
+      "integrity": "sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ=="
     },
     "smart-buffer": {
       "version": "1.1.15",
@@ -553,9 +591,9 @@
       "optional": true
     },
     "statuses": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.4.0.tgz",
-      "integrity": "sha512-zhSCtt8v2NDrRlPQpCNtw/heZLtfUDqxBM1udqikb/Hbk52LK4nQSwr10u77iopCW5LsyHpuXS0GnEc48mLeew=="
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
+      "integrity": "sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow="
     },
     "string_decoder": {
       "version": "0.10.31",
@@ -597,9 +635,9 @@
       "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
     },
     "urllib": {
-      "version": "2.26.0",
-      "resolved": "https://registry.npmjs.org/urllib/-/urllib-2.26.0.tgz",
-      "integrity": "sha512-t7gTVswm3mqfSkVaIE2546LGyjwtcJ1tNaOWOk8Kquih/BTueYADkgFEL2UJiCGpuPxXD5FyC57oiGJQ7Aw6qQ==",
+      "version": "2.28.1",
+      "resolved": "https://registry.npmjs.org/urllib/-/urllib-2.28.1.tgz",
+      "integrity": "sha512-GFzJEU6ZTvR9NOqSUrmfiieFkKv0PbsSDEhUtdJgMvpXy9ugczjPmaKrj30z+tYQHt1oNkvNIxZg1RSjqCznqg==",
       "requires": {
         "any-promise": "1.3.0",
         "content-type": "1.0.4",
@@ -608,10 +646,12 @@
         "digest-header": "0.0.1",
         "ee-first": "1.1.1",
         "humanize-ms": "1.2.1",
-        "iconv-lite": "0.4.19",
-        "proxy-agent": "2.2.0",
-        "qs": "6.5.1",
-        "statuses": "1.4.0",
+        "iconv-lite": "0.4.23",
+        "ip": "1.1.5",
+        "proxy-agent": "2.3.1",
+        "pump": "3.0.0",
+        "qs": "6.5.2",
+        "statuses": "1.5.0",
         "utility": "1.13.1"
       }
     },
@@ -644,10 +684,20 @@
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
       "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus="
     },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+    },
     "xregexp": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-2.0.0.tgz",
       "integrity": "sha1-UqY+VsoLhKfzpfPWGHLxJq16WUM="
+    },
+    "yallist": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
+      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI="
     }
   }
 }
diff --git a/package.json b/package.json
index 3850d78..f8a6566 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "node-apollo",
-  "version": "1.1.8",
+  "version": "1.2.0",
   "description": "携程Apollo配置中心SDK。",
   "main": "index.js",
   "scripts": {
@@ -22,6 +22,6 @@
   },
   "dependencies": {
     "dotenv": "^4.0.0",
-    "urllib": "^2.26.0"
+    "urllib": "^2.28.1"
   }
 }