diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3120db3..8d1fa13 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,16 +5,23 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 0.4.0 (2024-09-16)
+
+### Breaking Changes
+
+- `pulldown-cmark` has been updated to `0.12`. Thank you to @sbuller for this
+  work!
+
 ## 0.3.0 (2024-07-30)
 
-## Breaking Changes
+### Breaking Changes
 
 - `pulldown-cmark` has been updated to `0.11.0`. Thank you to @sbuller for this
   work!
 
 ## 0.2.0 (2023-09-21)
 
-## Added
+### Added
 
 - `FrontmatterExtractor::extracted()` is a new function that returns true once
   the extractor has determined the frontmatter is fully extracted.
diff --git a/Cargo.toml b/Cargo.toml
index 7f569c7..2f8a024 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pulldown-cmark-frontmatter"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 description = "A Frontmatter extractor for Markdown documents"
@@ -11,12 +11,12 @@ readme = "./README.md"
 rust-version = "1.58"
 
 [dependencies]
-pulldown-cmark = { version = "0.11.0", default-features = false }
+pulldown-cmark = { version = "0.12", default-features = false }
 
 [dev-dependencies]
 serde = { version = "1.0.152", features = ["derive"] }
 toml = "0.8.0"
-pulldown-cmark = { version = "0.11.0", default-features = false, features = [
+pulldown-cmark = { version = "0.12", default-features = false, features = [
     "html",
 ] }