diff --git a/.travis.yml b/.travis.yml
index afa42c9..d95fa82 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,37 +1,37 @@
 language: dart
 dart:
-- dev
+- preview/raw/2.10.0-0.2-dev
 
 jobs:
   include:
     - stage: analyze_and_format
       name: "Analyze lib/ (no experiment flag)"
-      dart: dev
+      dart: preview/raw/2.10.0-0.2-dev
       os: linux
       script: dartanalyzer --fatal-warnings --fatal-infos lib/
     - stage: analyze_and_format
       name: "Analyze (with experiment flag)"
-      dart: dev
+      dart: preview/raw/2.10.0-0.2-dev
       os: linux
       script: dartanalyzer --enable-experiment=non-nullable --fatal-warnings --fatal-infos .
     - stage: analyze_and_format
       name: "Format"
-      dart: dev
+      dart: preview/raw/2.10.0-0.2-dev
       os: linux
       script: dartfmt -n --set-exit-if-changed .
     - stage: test
       name: "Vm Tests"
-      dart: dev
+      dart: preview/raw/2.10.0-0.2-dev
       os: linux
       script: pub run --enable-experiment=non-nullable test -p vm
     - stage: test
       name: "Web Tests"
-      dart: dev
+      dart: preview/raw/2.10.0-0.2-dev
       os: linux
       script: pub run --enable-experiment=non-nullable test -p chrome
 
 branches:
-  only: [master, null_safety]
+  only: [master]
 
 cache:
   directories:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f71941b..989359e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 1.1.0-nullsafety.2
+
+* Update for the 2.10 dev sdk.
+
+
 ## 1.1.0-nullsafety.1
 
 * Allow the <=2.9.10 stable sdks.
diff --git a/pubspec.yaml b/pubspec.yaml
index 78e32ea..b560a25 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,11 +1,11 @@
 name: characters
-version: 1.1.0-nullsafety.1
+version: 1.1.0-nullsafety.2
 description: String replacement with operations that are Unicode/grapheme cluster aware.
 homepage: https://www.github.com/dart-lang/characters
 
 environment:
-  # This must remain a tight upper bound constraint until nnbd is stable
-  sdk: '>=2.9.0-18.0 <=2.9.10'
+  # This must remain a tight constraint until nnbd is stable
+  sdk: '>=2.10.0-0 <2.10.0'
 
 dev_dependencies:
   test: "^1.6.0"
@@ -24,12 +24,14 @@
     git:
       url: git://github.com/dart-lang/sdk.git
       path: pkg/js
+      ref: 2-10-pkgs
   matcher:
     git: git://github.com/dart-lang/matcher.git
   meta:
     git:
       url: git://github.com/dart-lang/sdk.git
       path: pkg/meta
+      ref: 2-10-pkgs
   path:
     git: git://github.com/dart-lang/path.git
   pedantic: