diff --git a/package-lock.json b/package-lock.json
index 673fa91..49b6ecf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1037,9 +1037,9 @@
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+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.2.3.tgz",
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@@ -2041,15 +2041,15 @@
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-      "version": "0.27.4",
-      "resolved": "https://registry.npmjs.org/sapper/-/sapper-0.27.4.tgz",
-      "integrity": "sha512-BYdiJSiyVguu2FZBbl87mn8KhSu+C8JRl7FurclXbMgpiMW7Yt74HPCcu/hXOubvvZw0kVTnzBlAGJCXZmldnA==",
+      "version": "0.27.11",
+      "resolved": "https://registry.npmjs.org/sapper/-/sapper-0.27.11.tgz",
+      "integrity": "sha512-5EaPZhlc8OnyN3UCI6dRSM1Gz5sxyzLZG/1z5nMvZhg9Ng+rSvEvJx/rW/tSHcnQPa8or7+YcbfvQHKS5oPHiw==",
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         "http-link-header": "^1.0.2",
-        "shimport": "^1.0.0",
-        "sourcemap-codec": "^1.4.4",
+        "shimport": "^1.0.1",
+        "sourcemap-codec": "^1.4.6",
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       }
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@@ -2350,22 +2350,10 @@
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-      "version": "3.6.0",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.6.0.tgz",
-      "integrity": "sha512-W+jrUHJr3DXKhrsS7NUVxn3zqMOFn0hL/Ei6v0anCIMoKC93TjcflTagwIHLW7SfMFfiQuktQyFVCFHGUE0+yg==",
-      "dev": true,
-      "requires": {
-        "commander": "~2.20.0",
-        "source-map": "~0.6.1"
-      },
-      "dependencies": {
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-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
-          "dev": true
-        }
-      }
+      "version": "3.10.3",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.10.3.tgz",
+      "integrity": "sha512-Lh00i69Uf6G74mvYpHCI9KVVXLcHW/xu79YTvH7Mkc9zyKUeSPz0owW0dguj0Scavns3ZOh3wY63J0Zb97Za2g==",
+      "dev": true
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     "unicode-canonical-property-names-ecmascript": {
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diff --git a/package.json b/package.json
index 14f2c29..c4c8cb9 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
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     "npm-run-all": "^4.1.5",
-    "sapper": "^0.27.0",
+    "sapper": "^0.27.11",
     "svelte": "^3.0.0",
     "@babel/core": "^7.0.0",
     "@babel/plugin-syntax-dynamic-import": "^7.0.0",