diff --git a/package-lock.json b/package-lock.json
index 1cbbbb1..5a114e6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -897,9 +897,9 @@
       "integrity": "sha512-Es6WcD0nO5l+2BOQS4uLfNPYQaNDfbot3X1XUoloz+x0mPDS3eeORZJl06HXjwBG1fOGwCRnzK88LMdxKRrd6Q=="
     },
     "@polka/url": {
-      "version": "1.0.0-next.3",
-      "resolved": "https://registry.npmjs.org/@polka/url/-/url-1.0.0-next.3.tgz",
-      "integrity": "sha512-Uom7l6OeP6vcf85lMImelYu5WKVWjXyhkpi9WsRdRzlJFJFPVhjBtBCktgDUj7dk1N5FURUdegSZ5XOjxf8JZg=="
+      "version": "1.0.0-next.11",
+      "resolved": "https://registry.npmjs.org/@polka/url/-/url-1.0.0-next.11.tgz",
+      "integrity": "sha512-3NsZsJIA/22P3QUyrEDNA2D133H4j224twJrdipXN38dpnIOzAbUDtOwkcJ5pXmn75w7LSQDjA4tO9dm1XlqlA=="
     },
     "@types/estree": {
       "version": "0.0.39",
@@ -1040,9 +1040,9 @@
       }
     },
     "clean-css": {
-      "version": "4.2.1",
-      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.2.1.tgz",
-      "integrity": "sha512-4ZxI6dy4lrY6FHzfiy1aEOXgu4LIsW2MhwG0VBKdcoGoH/XLFgaHSdLTGr4O8Be6A8r3MOphEiI8Gc1n0ecf3g==",
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.2.3.tgz",
+      "integrity": "sha512-VcMWDN54ZN/DS+g58HYL5/n4Zrqe8vHJpGA8KdgUXFU4fuP/aHNw8eld9SyEIyabIMJX/0RaY/fplOo5hYLSFA==",
       "dev": true,
       "requires": {
         "source-map": "~0.6.0"
@@ -1764,11 +1764,11 @@
       "dev": true
     },
     "polka": {
-      "version": "1.0.0-next.6",
-      "resolved": "https://registry.npmjs.org/polka/-/polka-1.0.0-next.6.tgz",
-      "integrity": "sha512-e3vZm2cMmPPrgn+0J5DO0rrSTfsCHGyh+YS6jjrqYP8BHJkPq8nCVSDxHkaiEN4f0c2dtR6FB+snDmLE/sRz7A==",
+      "version": "1.0.0-next.11",
+      "resolved": "https://registry.npmjs.org/polka/-/polka-1.0.0-next.11.tgz",
+      "integrity": "sha512-M/HBkS6ILksrDq7uvktCTev81OzuLwNtpxMyYdUhxLKQlMWdsu789XMotQU+p8JY8CM8vx8ML0HudyWjRus/lg==",
       "requires": {
-        "@polka/url": "^1.0.0-next.3",
+        "@polka/url": "^1.0.0-next.11",
         "trouter": "^3.1.0"
       }
     },
@@ -2032,9 +2032,9 @@
       "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
     },
     "sapper": {
-      "version": "0.27.9",
-      "resolved": "https://registry.npmjs.org/sapper/-/sapper-0.27.9.tgz",
-      "integrity": "sha512-v3b3UgGeVhFUOpA5IZgdThdr4nZ6aMH6IxDsg1Yu2UWHWEV9vW/Zehch9M/xqJNp/x9n9X+S9syJg1s5QOOmFA==",
+      "version": "0.27.11",
+      "resolved": "https://registry.npmjs.org/sapper/-/sapper-0.27.11.tgz",
+      "integrity": "sha512-5EaPZhlc8OnyN3UCI6dRSM1Gz5sxyzLZG/1z5nMvZhg9Ng+rSvEvJx/rW/tSHcnQPa8or7+YcbfvQHKS5oPHiw==",
       "dev": true,
       "requires": {
         "html-minifier": "^4.0.0",
@@ -2309,22 +2309,10 @@
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
     },
     "uglify-js": {
-      "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": {
-        "source-map": {
-          "version": "0.6.1",
-          "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
     },
     "unicode-canonical-property-names-ecmascript": {
       "version": "1.0.4",
diff --git a/package.json b/package.json
index 0a4d5ff..adcbc7b 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   },
   "devDependencies": {
     "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",