diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a14e78fc..ca3268343 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,14 @@
-## 1.47.1
+## 1.48.0
 
 ### JS API
 
 * **Potentially breaking bug fix:** Match the specification of the new JS API by
   setting `LegacyResult.map` to `undefined` rather than `null`.
 
+#### TypeScript Declarations
+
+* Add a declaration for the `NULL` constant.
+
 ## 1.47.0
 
 ### JS API
diff --git a/pkg/sass_api/CHANGELOG.md b/pkg/sass_api/CHANGELOG.md
index 60364e5ff..0037bc757 100644
--- a/pkg/sass_api/CHANGELOG.md
+++ b/pkg/sass_api/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.0.0-beta.28
+
+* No user-visible changes.
+
 ## 1.0.0-beta.27
 
 * No user-visible changes.
diff --git a/pkg/sass_api/pubspec.yaml b/pkg/sass_api/pubspec.yaml
index 056995fdb..59d013483 100644
--- a/pkg/sass_api/pubspec.yaml
+++ b/pkg/sass_api/pubspec.yaml
@@ -2,7 +2,7 @@ name: sass_api
 # Note: Every time we add a new Sass AST node, we need to bump the *major*
 # version because it's a breaking change for anyone who's implementing the
 # visitor interface(s).
-version: 1.0.0-beta.27
+version: 1.0.0-beta.28
 description: Additional APIs for Dart Sass.
 homepage: https://github.com/sass/dart-sass
 
@@ -10,7 +10,7 @@ environment:
   sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
-  sass: 1.47.0
+  sass: 1.48.0
 
 dependency_overrides:
   sass: {path: ../..}
diff --git a/pubspec.yaml b/pubspec.yaml
index 70ff2bf13..d82e7d9d0 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: sass
-version: 1.47.1-dev
+version: 1.48.0
 description: A Sass implementation in Dart.
 homepage: https://github.com/sass/dart-sass