diff --git a/meetups/beijing/5-simple-vote/package-lock.json b/meetups/beijing/5-simple-vote/package-lock.json
index 8c4446b..9837da9 100644
--- a/meetups/beijing/5-simple-vote/package-lock.json
+++ b/meetups/beijing/5-simple-vote/package-lock.json
@@ -2323,12 +2323,6 @@
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@@ -3352,7 +3346,8 @@
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@@ -3373,12 +3368,14 @@
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           "version": "1.0.0",
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-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.1.11",
           "bundled": true,
           "dev": true,
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@@ -3393,17 +3390,20 @@
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-          "dev": true
+          "dev": true,
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           "version": "0.0.1",
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-          "dev": true
+          "dev": true,
+          "optional": true
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-          "dev": true
+          "dev": true,
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@@ -3520,7 +3520,8 @@
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-          "dev": true
+          "dev": true,
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@@ -3532,6 +3533,7 @@
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           "dev": true,
+          "optional": true,
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@@ -3546,6 +3548,7 @@
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@@ -3553,12 +3556,14 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3577,6 +3582,7 @@
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           "dev": true,
+          "optional": true,
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@@ -3657,7 +3663,8 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3669,6 +3676,7 @@
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           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -3754,7 +3762,8 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3790,6 +3799,7 @@
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           "bundled": true,
           "dev": true,
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@@ -3809,6 +3819,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -3852,12 +3863,14 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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-          "dev": true
+          "dev": true,
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@@ -4995,14 +5008,22 @@
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+      "version": "1.4.2",
+      "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-1.4.2.tgz",
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       "dev": true,
       "requires": {
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-        "emojis-list": "^2.0.0",
+        "emojis-list": "^3.0.0",
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+      },
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+          "resolved": "https://registry.npmjs.org/emojis-list/-/emojis-list-3.0.0.tgz",
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+          "dev": true
+        }
       }
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@@ -8439,7 +8460,7 @@
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-              "from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git",
+              "from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934",
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@@ -8868,7 +8889,7 @@
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-          "from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git",
+          "from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934",
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