diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ab247d4d..f06998aad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,25 @@
-## 1.45.3
+## 1.46.0
 
 ### JS API
 
 * **Potentially breaking bug fix:** Match the specification of the new JS API by
   passing `undefined` rather than `null` to `Logger.warn()` for an unset `span`.
+  
+#### TypeScript Declarations
+
+* Add a declaration for the `LegacyPluginThis.options.context` field.
+
+* Update the definition of `LegacyAsyncFunction` to include explicit definitions
+  with zero through six arguments before the `done` parameter. This makes it
+  possible for TypeScript users to pass in callbacks that take a specific number
+  of arguments, rather than having to declare a callback that takes an arbitrary
+  number.
+
+* Add a declaration for `types.Error`, a legacy API class that can be returned
+  by asynchronous functions to signal asynchronous errors.
+
+* Add a `LegacyAsyncFunctionDone` type for the `done` callback that's passed to
+  `LegacyAsyncFunction`.
 
 ## 1.45.2
 
diff --git a/pkg/sass_api/pubspec.yaml b/pkg/sass_api/pubspec.yaml
index fc49ecb1f..e371ba649 100644
--- a/pkg/sass_api/pubspec.yaml
+++ b/pkg/sass_api/pubspec.yaml
@@ -10,7 +10,7 @@ environment:
   sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
-  sass: 1.45.3
+  sass: 1.46.0
 
 dependency_overrides:
   sass: {path: ../..}
diff --git a/pubspec.yaml b/pubspec.yaml
index 96a16cc63..0650d41b4 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: sass
-version: 1.45.3
+version: 1.46.0
 description: A Sass implementation in Dart.
 homepage: https://github.com/sass/dart-sass