diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..62982d8
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,12 @@
+# Changelog
+
+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).
+
+## [Unreleased]
+
+### Changed
+
+* Updated [`tracing-bunyan-formatter`](https://github.com/LukeMathWalker/tracing-bunyan-formatter) from 0.3.3 to 0.3.4 ([#504])
+
+[#504]: https://github.com/vbrandl/hoc/pull/504
diff --git a/Cargo.lock b/Cargo.lock
index fb9459d..8f70d8a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2062,9 +2062,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-bunyan-formatter"
-version = "0.3.3"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a788f2119fde477cd33823330c14004fa8cdac6892fd6f12181bbda9dbf14fc9"
+checksum = "a2445962f94a813b2aaea29ceeccb6dce9fd3aa5b1cb45595cde755b00d021ad"
 dependencies = [
  "gethostname",
  "log",
diff --git a/Cargo.toml b/Cargo.toml
index 005828b..fd0146a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,7 +31,7 @@ serde_derive = "1.0.137"
 serde_json = "1.0.86"
 tracing = "0.1.37"
 tracing-actix-web = "0.6.1"
-tracing-bunyan-formatter = "0.3.3"
+tracing-bunyan-formatter = "0.3.4"
 tracing-futures = "0.2.5"
 tracing-log = "0.1.3"
 tracing-subscriber = { version = "0.3.16", features = ["registry", "env-filter"] }