diff --git a/pkgs/checks/CHANGELOG.md b/pkgs/checks/CHANGELOG.md
index 29b964f69..ddc9cdb48 100644
--- a/pkgs/checks/CHANGELOG.md
+++ b/pkgs/checks/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 0.3.1-wip
+## 0.3.1
 
 -   Directly compare keys across actual and expected `Map` instances when
     checking deep collection equality and all the keys can be directly compared
@@ -11,7 +11,7 @@
 -   Fix a bug where printing the result of a failed deep quality check would
     fail with a `TypeError` when comparing large `Map` instances 
 -   Increase SDK constraint to ^3.5.0.
--   Clarify this package is an _experiment_
+-   Clarify this package is experimental.
 
 ## 0.3.0
 
diff --git a/pkgs/checks/README.md b/pkgs/checks/README.md
index 0dd829115..a073af01b 100644
--- a/pkgs/checks/README.md
+++ b/pkgs/checks/README.md
@@ -6,20 +6,19 @@ a literate API.
 
 ## package:checks (experimental)
 
-`package:checks` is an experiment. For production use cases, please
-use `package:test` and `package:matcher`.
+`package:checks` is still experimental. For production use cases, please use
+`package:test` and `package:matcher`.
 
-For packages in the labs.dart.dev publisher we generally plan to either graduate the
-package into a supported publisher (dart.dev, tools.dart.dev) after a period of
-feedback and iteration, or discontinue the package. These packages have a much
-higher expected rate of API and breaking changes.
+For packages in the `labs.dart.dev` publisher we generally plan to either
+graduate the package into a supported publisher (`dart.dev`, `tools.dart.dev`)
+after a period of feedback and iteration, or discontinue the package. These
+packages have a much higher expected rate of API and breaking changes.
 
-To provide feedback on the API, please file
-[an issue][] with questions, suggestions, feature requests, or general
-feedback.
+To provide feedback on the API, please file [an issue][] with questions,
+suggestions, feature requests, or general feedback.
 
-For documentation about converting your usage of `package:matcher` to `checks`, see the
-[migration guide][].
+For documentation about converting your usage of `package:matcher` to `checks`,
+see the [migration guide][].
 
 [an issue]:https://github.com/dart-lang/test/issues/new?labels=package%3Achecks&template=03_checks_feedback.md
 [migration guide]:https://github.com/dart-lang/test/blob/master/pkgs/checks/doc/migrating_from_matcher.md
diff --git a/pkgs/checks/pubspec.yaml b/pkgs/checks/pubspec.yaml
index 8c7700536..8a00937e8 100644
--- a/pkgs/checks/pubspec.yaml
+++ b/pkgs/checks/pubspec.yaml
@@ -1,10 +1,11 @@
 name: checks
-version: 0.3.1-wip
+version: 0.3.1
 description: >-
   A framework for checking values against expectations and building custom
   expectations.
 repository: https://github.com/dart-lang/test/tree/master/pkgs/checks
 issue_tracker: https://github.com/dart-lang/test/issues?q=is%3Aissue+is%3Aopen+label%3Apackage%3Achecks
+
 resolution: workspace
 
 environment: