diff --git a/package-lock.json b/package-lock.json
index 87bb9f1b..0a405720 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,11 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@types/node": {
+      "version": "9.4.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-9.4.0.tgz",
+      "integrity": "sha512-zkYho6/4wZyX6o9UQ8rd0ReEaiEYNNCqYFIAACe2Tf9DrYlgzWW27OigYHnnztnnZQwVRpwWmZKegFmDpinIsA=="
+    },
     "abbrev": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
@@ -357,6 +362,11 @@
         "type-is": "1.6.15"
       }
     },
+    "boolbase": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/boolbase/-/boolbase-1.0.0.tgz",
+      "integrity": "sha1-aN/1++YMUes3cl6p4+0xDcwed24="
+    },
     "boom": {
       "version": "2.10.1",
       "resolved": "https://registry.npmjs.org/boom/-/boom-2.10.1.tgz",
@@ -620,6 +630,19 @@
         "supports-color": "2.0.0"
       }
     },
+    "cheerio": {
+      "version": "1.0.0-rc.2",
+      "resolved": "https://registry.npmjs.org/cheerio/-/cheerio-1.0.0-rc.2.tgz",
+      "integrity": "sha1-S59TqBsn5NXawxwP/Qz6A8xoMNs=",
+      "requires": {
+        "css-select": "1.2.0",
+        "dom-serializer": "0.1.0",
+        "entities": "1.1.1",
+        "htmlparser2": "3.9.2",
+        "lodash": "4.17.4",
+        "parse5": "3.0.3"
+      }
+    },
     "chokidar": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-2.0.0.tgz",
@@ -765,6 +788,14 @@
         "q": "1.5.1"
       }
     },
+    "code-frame": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/code-frame/-/code-frame-5.0.0.tgz",
+      "integrity": "sha1-QAMHB+xG4dmdXlLcnzV/ytkNmT0=",
+      "requires": {
+        "left-pad": "1.2.0"
+      }
+    },
     "code-point-at": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
@@ -1125,6 +1156,17 @@
         "source-list-map": "2.0.0"
       }
     },
+    "css-select": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/css-select/-/css-select-1.2.0.tgz",
+      "integrity": "sha1-KzoRBTnFNV8c2NMUYj6HCxIeyFg=",
+      "requires": {
+        "boolbase": "1.0.0",
+        "css-what": "2.1.0",
+        "domutils": "1.5.1",
+        "nth-check": "1.0.1"
+      }
+    },
     "css-selector-tokenizer": {
       "version": "0.7.0",
       "resolved": "https://registry.npmjs.org/css-selector-tokenizer/-/css-selector-tokenizer-0.7.0.tgz",
@@ -1135,6 +1177,11 @@
         "regexpu-core": "1.0.0"
       }
     },
+    "css-what": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/css-what/-/css-what-2.1.0.tgz",
+      "integrity": "sha1-lGfQMsOM+u+58teVASUwYvh/ob0="
+    },
     "cssesc": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/cssesc/-/cssesc-0.1.0.tgz",
@@ -1318,11 +1365,49 @@
         "randombytes": "2.0.5"
       }
     },
+    "dom-serializer": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-0.1.0.tgz",
+      "integrity": "sha1-BzxpdUbOB4DOI75KKOKT5AvDDII=",
+      "requires": {
+        "domelementtype": "1.1.3",
+        "entities": "1.1.1"
+      },
+      "dependencies": {
+        "domelementtype": {
+          "version": "1.1.3",
+          "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
+          "integrity": "sha1-vSh3PiZCiBrsUVRJJCmcXNgiGFs="
+        }
+      }
+    },
     "domain-browser": {
       "version": "1.1.7",
       "resolved": "https://registry.npmjs.org/domain-browser/-/domain-browser-1.1.7.tgz",
       "integrity": "sha1-hnqksJP6oF8d4IwG9NeyH9+GmLw="
     },
+    "domelementtype": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.3.0.tgz",
+      "integrity": "sha1-sXrtguirWeUt2cGbF1bg/BhyBMI="
+    },
+    "domhandler": {
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/domhandler/-/domhandler-2.4.1.tgz",
+      "integrity": "sha1-iS5HAAqZvlW783dP/qBWHYh5wlk=",
+      "requires": {
+        "domelementtype": "1.3.0"
+      }
+    },
+    "domutils": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/domutils/-/domutils-1.5.1.tgz",
+      "integrity": "sha1-3NhIiib1Y9YQeeSMn3t+Mjc2gs8=",
+      "requires": {
+        "dom-serializer": "0.1.0",
+        "domelementtype": "1.3.0"
+      }
+    },
     "duplexer": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz",
@@ -1427,6 +1512,16 @@
         "tapable": "0.2.8"
       }
     },
+    "ensure-posix-path": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/ensure-posix-path/-/ensure-posix-path-1.0.2.tgz",
+      "integrity": "sha1-pls+QtC3HPxYXrd0+ZQ8jZuRsMI="
+    },
+    "entities": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-1.1.1.tgz",
+      "integrity": "sha1-blwtClYhtdra7O+AuQ7ftc13cvA="
+    },
     "errno": {
       "version": "0.1.6",
       "resolved": "https://registry.npmjs.org/errno/-/errno-0.1.6.tgz",
@@ -3186,6 +3281,19 @@
       "resolved": "https://registry.npmjs.org/html-entities/-/html-entities-1.2.1.tgz",
       "integrity": "sha1-DfKTUfByEWNRXfueVUPl9u7VFi8="
     },
+    "htmlparser2": {
+      "version": "3.9.2",
+      "resolved": "https://registry.npmjs.org/htmlparser2/-/htmlparser2-3.9.2.tgz",
+      "integrity": "sha1-G9+HrMoPP55T+k/M6w9LTLsAszg=",
+      "requires": {
+        "domelementtype": "1.3.0",
+        "domhandler": "2.4.1",
+        "domutils": "1.5.1",
+        "entities": "1.1.1",
+        "inherits": "2.0.3",
+        "readable-stream": "2.3.3"
+      }
+    },
     "http-errors": {
       "version": "1.6.2",
       "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.2.tgz",
@@ -3768,6 +3876,11 @@
         "invert-kv": "1.0.0"
       }
     },
+    "left-pad": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/left-pad/-/left-pad-1.2.0.tgz",
+      "integrity": "sha1-0wpzxrggHY99jnlWupYWCHpo4O4="
+    },
     "load-json-file": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/load-json-file/-/load-json-file-4.0.0.tgz",
@@ -3794,6 +3907,11 @@
         "json5": "0.5.1"
       }
     },
+    "locate-character": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/locate-character/-/locate-character-2.0.5.tgz",
+      "integrity": "sha512-n2GmejDXtOPBAZdIiEFy5dJ5N38xBCXLNOtw2WpB9kGh6pnrEuKlwYI+Tkpofc4wDtVXHtoAOJaMRlYG/oYaxg=="
+    },
     "locate-path": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-2.0.0.tgz",
@@ -4001,6 +4119,14 @@
       "resolved": "https://registry.npmjs.org/marky/-/marky-1.2.0.tgz",
       "integrity": "sha1-lhftZHu76o9F0ZUm2jPexwYG30I="
     },
+    "matcher-collection": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/matcher-collection/-/matcher-collection-1.0.5.tgz",
+      "integrity": "sha512-nUCmzKipcJEwYsBVAFh5P+d7JBuhJaW1xs85Hara9xuMLqtCVUrW6DSC0JVIkluxEH2W45nPBM/wjHtBXa/tYA==",
+      "requires": {
+        "minimatch": "3.0.4"
+      }
+    },
     "math-expression-evaluator": {
       "version": "1.2.17",
       "resolved": "https://registry.npmjs.org/math-expression-evaluator/-/math-expression-evaluator-1.2.17.tgz",
@@ -4559,6 +4685,14 @@
         "set-blocking": "2.0.0"
       }
     },
+    "nth-check": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/nth-check/-/nth-check-1.0.1.tgz",
+      "integrity": "sha1-mSms32KPwsQQmN6rgqxYDPFJquQ=",
+      "requires": {
+        "boolbase": "1.0.0"
+      }
+    },
     "num2fraction": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/num2fraction/-/num2fraction-1.2.2.tgz",
@@ -4833,6 +4967,14 @@
         "json-parse-better-errors": "1.0.1"
       }
     },
+    "parse5": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/parse5/-/parse5-3.0.3.tgz",
+      "integrity": "sha512-rgO9Zg5LLLkfJF9E6CCmXlSE4UVceloys8JrFqCcHloC3usd/kJCyPDwH2SOlzix2j3xaP9sUX3e8+kvkuleAA==",
+      "requires": {
+        "@types/node": "9.4.0"
+      }
+    },
     "parseurl": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.2.tgz",
@@ -5603,6 +5745,11 @@
       "resolved": "https://registry.npmjs.org/querystring-es3/-/querystring-es3-0.2.1.tgz",
       "integrity": "sha1-nsYfeQSYdXB9aUFFlv2Qek1xHnM="
     },
+    "querystringify": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/querystringify/-/querystringify-1.0.0.tgz",
+      "integrity": "sha1-YoYkIRLFtxL6ZU5SZlK/ahP/Bcs="
+    },
     "quick-lru": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/quick-lru/-/quick-lru-1.1.0.tgz",
@@ -5909,6 +6056,11 @@
       "resolved": "https://registry.npmjs.org/require-relative/-/require-relative-0.8.7.tgz",
       "integrity": "sha1-eZlTn8ngR6N5KPoZb44VY9q9Nt4="
     },
+    "requires-port": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/requires-port/-/requires-port-1.0.0.tgz",
+      "integrity": "sha1-kl0mAdOaxIXgkc8NpcbmlNw9yv8="
+    },
     "resolve-url": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/resolve-url/-/resolve-url-0.2.1.tgz",
@@ -5957,18 +6109,35 @@
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
       "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg=="
     },
+    "sander": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/sander/-/sander-0.6.0.tgz",
+      "integrity": "sha1-rxYkzX+2362Y6+9WUxn5IAeNqSU=",
+      "requires": {
+        "graceful-fs": "4.1.11",
+        "mkdirp": "0.5.1",
+        "rimraf": "2.6.2"
+      }
+    },
     "sapper": {
-      "version": "0.3.2",
-      "resolved": "https://registry.npmjs.org/sapper/-/sapper-0.3.2.tgz",
-      "integrity": "sha512-Yr37NsWTlvXpbh3ESFhyNvKTS3zWvgdkBXUg343RwRNDqI8LYyNl/Xa7l+XXmH5buUkzS4L2unUOZ8en9ilLPg==",
+      "version": "0.5.1",
+      "resolved": "https://registry.npmjs.org/sapper/-/sapper-0.5.1.tgz",
+      "integrity": "sha512-21lEaTjzJh8idFnfiMSCjgkYqiKj+8mWCKDeK+rAiVzmb/l6p05BTt5kj+yTzv4QHUnENbTmWsA7NbcedYBWmw==",
       "requires": {
         "chalk": "2.3.0",
+        "cheerio": "1.0.0-rc.2",
         "chokidar": "1.7.0",
+        "code-frame": "5.0.0",
         "escape-html": "1.0.3",
+        "locate-character": "2.0.5",
         "mkdirp": "0.5.1",
         "relative": "3.0.2",
         "require-relative": "0.8.7",
         "rimraf": "2.6.2",
+        "sander": "0.6.0",
+        "serialize-javascript": "1.4.0",
+        "url-parse": "1.2.0",
+        "walk-sync": "0.3.2",
         "webpack": "3.10.0",
         "webpack-hot-middleware": "2.21.0"
       },
@@ -6880,7 +7049,9 @@
       "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc="
     },
     "svelte": {
-      "version": "github:nolanlawson/svelte#c5cd9fc76e069faa364e5c2c6343ddaf2adc4dcf"
+      "version": "1.54.0",
+      "resolved": "https://registry.npmjs.org/svelte/-/svelte-1.54.0.tgz",
+      "integrity": "sha512-zPq96jO0KKrtOcV9IvDVRiWmQ69B9ICfIlyPBEfDR4QTH1jXGDXhuAhXjfV/UO3atvvkHe6BpSRhRi7tD7tYKQ=="
     },
     "svelte-extras": {
       "version": "1.6.0",
@@ -7358,6 +7529,15 @@
         }
       }
     },
+    "url-parse": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/url-parse/-/url-parse-1.2.0.tgz",
+      "integrity": "sha512-DT1XbYAfmQP65M/mE6OALxmXzZ/z1+e5zk2TcSKe/KiYbNGZxgtttzC0mR/sjopbpOXcbniq7eIKmocJnUWlEw==",
+      "requires": {
+        "querystringify": "1.0.0",
+        "requires-port": "1.0.0"
+      }
+    },
     "url-search-params": {
       "version": "0.10.0",
       "resolved": "https://registry.npmjs.org/url-search-params/-/url-search-params-0.10.0.tgz",
@@ -7521,6 +7701,15 @@
         "indexof": "0.0.1"
       }
     },
+    "walk-sync": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/walk-sync/-/walk-sync-0.3.2.tgz",
+      "integrity": "sha512-FMB5VqpLqOCcqrzA9okZFc0wq0Qbmdm396qJxvQZhDpyu0W95G9JCmp74tx7iyYnyOcBtUuKJsgIKAqjozvmmQ==",
+      "requires": {
+        "ensure-posix-path": "1.0.2",
+        "matcher-collection": "1.0.5"
+      }
+    },
     "watchpack": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-1.4.0.tgz",
diff --git a/package.json b/package.json
index 4a9f2c58..7a04fbae 100644
--- a/package.json
+++ b/package.json
@@ -41,10 +41,10 @@
     "quick-lru": "^1.1.0",
     "requestidlecallback": "^0.3.0",
     "rimraf": "^2.6.2",
-    "sapper": "^0.3.2",
+    "sapper": "^0.5.1",
     "serve-static": "^1.13.1",
     "style-loader": "^0.19.1",
-    "svelte": "github:nolanlawson/svelte#master-8057884",
+    "svelte": "^1.54.0",
     "svelte-extras": "^1.6.0",
     "svelte-loader": "^2.3.3",
     "svelte-transitions": "^1.1.1",
diff --git a/templates/2xx.html b/templates/2xx.html
index aaaff974..3468d420 100644
--- a/templates/2xx.html
+++ b/templates/2xx.html
@@ -153,6 +153,6 @@ body.offline,body.theme-hotpants.offline,body.theme-majesty.offline,body.theme-o
 	<!-- Sapper creates a <script> tag containing `templates/main.js`
 	     and anything else it needs to hydrate the app and
 	     initialise the router -->
-	<script src='%sapper.main%'></script>
+  %sapper.scripts%
 </body>
 </html>
\ No newline at end of file
diff --git a/templates/4xx.html b/templates/4xx.html
index 3f1329c7..fd0dfd77 100644
--- a/templates/4xx.html
+++ b/templates/4xx.html
@@ -41,6 +41,6 @@
 	<h1>%sapper.title%</h1>
 	<p>Could not %sapper.method% %sapper.url%</p>
 
-	<script src='%sapper.main%'></script>
+  %sapper.scripts%
 </body>
 </html>
\ No newline at end of file