diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f530226..b64a1a8d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,29 @@
+## 1.58.0
+
+* Remove sourcemap comments from Sass sources. The generated sourcemap comment
+  for the compiled CSS output remains unaffected.
+
+* Fix a bug in `@extend` logic where certain selectors with three or more
+  combinators were incorrectly considered superselectors of similar selectors
+  with fewer combinators, causing them to be incorrectly trimmed from the
+  output.
+
+* Produce a better error message for a number with a leading `+` or `-`, a
+  decimal point, but no digits.
+
+* Produce a better error message for a nested property whose name starts with
+  `--`.
+
+* Fix a crash when a selector ends in an escaped backslash.
+
+* Add the relative length units from CSS Values 4 and CSS Contain 3 as known
+  units to validate bad computation in `calc`.
+
+### Command Line Interface
+
+* The `--watch` flag will now track loads through calls to `meta.load-css()` as
+  long as their URLs are literal strings without any interpolation.
+
 ## 1.57.1
 
 * No user-visible changes.
diff --git a/pubspec.yaml b/pubspec.yaml
index eaf67510..8840976d 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: sass_embedded
-version: 1.57.1
+version: 1.58.0
 description: An implementation of the Sass embedded protocol using Dart Sass.
 homepage: https://github.com/sass/dart-sass-embedded
 environment:
@@ -11,8 +11,8 @@ dependencies:
   meta: ^1.1.0
   path: ^1.6.0
   protobuf: ^2.0.0
-  sass: 1.57.1
-  sass_api: ^4.0.0
+  sass: 1.58.0
+  sass_api: ^5.0.0
   source_span: ^1.1.0
   stack_trace: ^1.6.0
   stream_channel: ">=1.6.0 <3.0.0"