stable null safety release (#17)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5bf529e..7714f35 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 3.0.0-dev
+## 3.0.0
 
 * Migrate to null safety.
 
diff --git a/pubspec.yaml b/pubspec.yaml
index c8bd176..0154fbc 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: shelf_packages_handler
-version: 3.0.0-dev
+version: 3.0.0
 
 description: A shelf handler for serving a `packages/` directory.
 repository: https://github.com/dart-lang/shelf_packages_handler
@@ -17,6 +17,5 @@
   test: ^1.16.0
 
 dependency_overrides:
-  shelf_static:
-    git: https://github.com/dart-lang/shelf_static
+  shelf_static: ^1.0.0
   test: ^1.16.0