diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 5e93910..84e8c97 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -40,7 +40,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        sdk: [2.18.0, dev]
+        sdk: [3.0.0, stable, dev]
     steps:
     - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744
     - uses: dart-lang/setup-dart@d6a63dab3335f427404425de0fbfed4686d93c4f
@@ -66,7 +66,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        sdk: [2.18.0, dev]
+        sdk: [3.0.0, stable, dev]
     steps:
     - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744
     - uses: dart-lang/setup-dart@d6a63dab3335f427404425de0fbfed4686d93c4f
diff --git a/.github/workflows/post_summaries.yaml b/.github/workflows/post_summaries.yaml
new file mode 100644
index 0000000..fe2284c
--- /dev/null
+++ b/.github/workflows/post_summaries.yaml
@@ -0,0 +1,17 @@
+name: Comment on PRs
+
+on:
+  # Trigger this workflow after the Publish workflow completes. This workflow
+  # will have permissions to create comments on the PR, even if the original
+  # workflow couldn't.
+  workflow_run:
+    workflows: 
+      - Publish
+    types:
+      - completed
+
+jobs:
+  upload:
+    uses: dart-lang/ecosystem/.github/workflows/post_summaries.yaml@main
+    permissions:
+      pull-requests: write
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
new file mode 100644
index 0000000..afe5935
--- /dev/null
+++ b/.github/workflows/publish.yaml
@@ -0,0 +1,21 @@
+# A CI configuration to auto-publish pub packages.
+
+name: Publish
+
+on:
+  # Trigger on pull requests that target the default branch.
+  pull_request:
+    branches: [ master ]
+  # Also, trigger when tags are pushed to the repo.
+  push:
+    tags: [ 'v[0-9]+.[0-9]+.[0-9]+*' ]
+
+# The script below will perform publishing checks (version checks, publishing
+# dry run, ...) when run on a PR, and perform an actual pub publish when run as
+# a result of a git tag event.
+jobs:
+  publish:
+    if: ${{ github.repository_owner == 'google' }}
+    uses: dart-lang/ecosystem/.github/workflows/publish.yaml@main
+    with:
+      write-comments: false
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d7ac0ea..c031d4f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 3.0.4-wip
+
+* Require Dart 3.0.
+
 ## 3.0.3
 
 * Include a content-type header when sending requests from `async_html.dart`.
@@ -7,7 +11,7 @@
 
 ## 3.0.2
 
-* Require Dart 2.18
+* Require Dart 2.18.
 * "Officially" deprecate `core.dart` and `io.dart` libraries.
 * Remove the dependecy on `package:archive`.
 
diff --git a/pubspec.yaml b/pubspec.yaml
index a031159..aae0f49 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,12 +1,12 @@
 name: webdriver
-version: 3.0.3
+version: 3.0.4-wip
 description: >-
   Provides WebDriver bindings for Dart. Supports WebDriver JSON interface and
   W3C spec. Requires the use of WebDriver remote server.
 repository: https://github.com/google/webdriver.dart
 
 environment:
-  sdk: '>=2.18.0 <3.0.0'
+  sdk: ^3.0.0
 
 dependencies:
   matcher: ^0.12.10