diff --git a/pkg/meta/CHANGELOG.md b/pkg/meta/CHANGELOG.md
index c3149b2a268..e8aafa20951 100644
--- a/pkg/meta/CHANGELOG.md
+++ b/pkg/meta/CHANGELOG.md
@@ -1,6 +1,7 @@
-## 1.9.1-dev
+## 1.9.1
 
-* Update `@reopen` documentation.
+* Update SDK constraints to `>=2.12.0 <4.0.0`.
+* Mark `@reopen` stable.
 
 ## 1.9.0
 
diff --git a/pkg/meta/lib/meta.dart b/pkg/meta/lib/meta.dart
index 199a335aef7..85ad4eb2126 100644
--- a/pkg/meta/lib/meta.dart
+++ b/pkg/meta/lib/meta.dart
@@ -297,7 +297,6 @@ const _Protected protected = _Protected();
 ///   class.
 /// * The annotation is applied to a class or mixin which does not require it.
 ///   (The intent to reopen was not satisfied.)
-@experimental // todo(pq): remove before publishing for 3.0 (https://github.com/dart-lang/sdk/issues/51059)
 const _Reopen reopen = _Reopen();
 
 /// Used to annotate a named parameter `p` in a method or function `f`.
diff --git a/pkg/meta/pubspec.yaml b/pkg/meta/pubspec.yaml
index 4807ec5ff97..2696172bddd 100644
--- a/pkg/meta/pubspec.yaml
+++ b/pkg/meta/pubspec.yaml
@@ -1,13 +1,13 @@
 name: meta
 # Note, because version `2.0.0` was mistakenly released, the next major version must be `3.x.y`.
-version: 1.9.1-dev
+version: 1.9.1
 description: >-
  Annotations used to express developer intentions that can't otherwise be
  deduced by statically analyzing source code.
 repository: https://github.com/dart-lang/sdk/tree/main/pkg/meta
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: ">=2.12.0 <4.0.0"
 
 # We use 'any' version constraints here as we get our package versions from
 # the dart-lang/sdk repo's DEPS file. Note that this is a special case; the