diff --git a/pubspec.lock b/pubspec.lock
index 50af15f877..6cc4e52ae3 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -14,28 +14,28 @@ packages:
       name: args
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.13.7"
+    version: "1.4.1"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.13.3"
+    version: "2.0.6"
   barback:
     dependency: transitive
     description:
       name: barback
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.15.2+13"
+    version: "0.15.2+14"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.2"
+    version: "1.0.3"
   charcode:
     dependency: transitive
     description:
@@ -56,7 +56,7 @@ packages:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.14.3"
+    version: "1.14.6"
   convert:
     dependency: transitive
     description:
@@ -84,7 +84,7 @@ packages:
       name: dhttpd
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.1"
+    version: "2.0.0"
   front_end:
     dependency: "direct main"
     description:
@@ -112,7 +112,7 @@ packages:
       name: html
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.13.2"
+    version: "0.13.3"
   http:
     dependency: "direct dev"
     description:
@@ -140,7 +140,7 @@ packages:
       name: io
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.1"
+    version: "0.3.2+1"
   isolate:
     dependency: transitive
     description:
@@ -175,7 +175,7 @@ packages:
       name: markdown
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.0"
+    version: "1.1.1"
   matcher:
     dependency: transitive
     description:
@@ -196,14 +196,14 @@ packages:
       name: mime
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.4"
+    version: "0.9.6"
   multi_server_socket:
     dependency: transitive
     description:
       name: multi_server_socket
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.0"
+    version: "1.0.1"
   mustache4dart:
     dependency: "direct main"
     description:
@@ -252,7 +252,7 @@ packages:
       name: pool
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.3"
+    version: "1.3.4"
   pub_semver:
     dependency: "direct dev"
     description:
@@ -287,14 +287,7 @@ packages:
       name: shelf
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.6.8"
-  shelf_cors:
-    dependency: transitive
-    description:
-      name: shelf_cors
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.2.1"
+    version: "0.7.2"
   shelf_packages_handler:
     dependency: transitive
     description:
@@ -308,7 +301,7 @@ packages:
       name: shelf_static
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.6"
+    version: "0.2.7"
   shelf_web_socket:
     dependency: transitive
     description:
@@ -343,14 +336,14 @@ packages:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.1"
+    version: "1.9.2"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.2"
+    version: "1.6.4"
   string_scanner:
     dependency: transitive
     description:
@@ -371,7 +364,7 @@ packages:
       name: test
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.30+3"
+    version: "0.12.32+1"
   tuple:
     dependency: "direct main"
     description:
@@ -392,21 +385,21 @@ packages:
       name: utf
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.0+3"
+    version: "0.9.0+4"
   watcher:
     dependency: transitive
     description:
       name: watcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.7+4"
+    version: "0.9.7+7"
   web_socket_channel:
     dependency: transitive
     description:
       name: web_socket_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.6"
+    version: "1.0.7"
   yaml:
     dependency: "direct main"
     description:
@@ -415,4 +408,4 @@ packages:
     source: hosted
     version: "2.1.13"
 sdks:
-  dart: ">=2.0.0-dev <=2.0.0-dev.32.0"
+  dart: ">=2.0.0-dev.23.0 <=2.0.0-dev.35.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index bfebc85bcf..4257ceb6c7 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -28,7 +28,7 @@ dependencies:
   tuple: ^1.0.1
   yaml: ^2.1.0
 dev_dependencies:
-  dhttpd: ^0.3.1
+  dhttpd: ^2.0.0
   grinder: ^0.8.1
   http: ^0.11.0
   meta: ^1.0.0