diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1638a35..19f9bc4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ All notable changes to Buzznode are documented here, following
 
 ## [Unreleased]
 
+## [0.3.0] - 2026-07-28
+
+### Changed
+
+- Update the Buzz headless tools to 0.5.0 from upstream commit `4a977c5`.
+
 ## [0.2.0] - 2026-07-27
 
 ### Added
diff --git a/Dockerfile b/Dockerfile
index 41fe2e5..e0cc8d9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,9 +10,9 @@
 FROM rust:1.95-bookworm AS buzz-tools
 
 ARG TARGETARCH
-ARG BUZZ_VERSION=0.4.26
-ARG BUZZ_DEB_SHA256=1b520756ecfc28ad81981a2cd5cc6688f785f447b3f5d8d553544906f59bf521
-ARG BUZZ_SOURCE_SHA=0096d710ed2e6abab19aaf7cdc14e3ee603d7ec8
+ARG BUZZ_VERSION=0.5.0
+ARG BUZZ_DEB_SHA256=9674cf098eca88333e8d895ec9d0a5c56c796fbc358fe1087b645890b8e2faca
+ARG BUZZ_SOURCE_SHA=4a977c588a540be38bd8ddb268cd24437bac8165
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
         ca-certificates curl git pkg-config && \
@@ -138,9 +138,9 @@ RUN arch="${TARGETARCH:-$(dpkg --print-architecture)}"; \
 
 # Copy only the headless Buzz tools. The builder extracts the verified upstream
 # package on AMD64 and builds the same pinned source tag on ARM64.
-ARG BUZZ_VERSION=0.4.26
-ARG BUZZ_DEB_SHA256=1b520756ecfc28ad81981a2cd5cc6688f785f447b3f5d8d553544906f59bf521
-ARG BUZZ_SOURCE_SHA=0096d710ed2e6abab19aaf7cdc14e3ee603d7ec8
+ARG BUZZ_VERSION=0.5.0
+ARG BUZZ_DEB_SHA256=9674cf098eca88333e8d895ec9d0a5c56c796fbc358fe1087b645890b8e2faca
+ARG BUZZ_SOURCE_SHA=4a977c588a540be38bd8ddb268cd24437bac8165
 COPY --from=buzz-tools /out/ /usr/local/bin/
 RUN for binary in buzz buzz-acp buzz-agent buzz-dev-mcp git-credential-nostr; do \
         test -x "/usr/local/bin/$binary"; \
diff --git a/Makefile b/Makefile
index 17e73d5..fbc1036 100644
--- a/Makefile
+++ b/Makefile
@@ -9,9 +9,9 @@ NATIVE_ARCH := $(shell uname -m | sed \
 	-e 's/^aarch64$$/arm64/')
 PLATFORM ?= linux/$(NATIVE_ARCH)
 TARGETARCH ?= $(word 2,$(subst /, ,$(PLATFORM)))
-BUZZ_VERSION ?= 0.4.26
-BUZZ_DEB_SHA256 ?= 1b520756ecfc28ad81981a2cd5cc6688f785f447b3f5d8d553544906f59bf521
-BUZZ_SOURCE_SHA ?= 0096d710ed2e6abab19aaf7cdc14e3ee603d7ec8
+BUZZ_VERSION ?= 0.5.0
+BUZZ_DEB_SHA256 ?= 9674cf098eca88333e8d895ec9d0a5c56c796fbc358fe1087b645890b8e2faca
+BUZZ_SOURCE_SHA ?= 4a977c588a540be38bd8ddb268cd24437bac8165
 CODEX_VERSION ?= 0.145.0
 CLAUDE_CODE_VERSION ?= 2.1.220
 CODEX_ACP_VERSION ?= 1.1.7
diff --git a/README.md b/README.md
index 7ddca08..cb6a3c5 100644
--- a/README.md
+++ b/README.md
@@ -343,7 +343,7 @@ The Makefile selects `linux/amd64` or `linux/arm64` from the host by default.
 
 | Component           | Version   |
 | ------------------- | --------- |
-| Buzz headless tools | `0.4.26`  |
+| Buzz headless tools | `0.5.0`   |
 | Codex               | `0.145.0` |
 | Claude Code         | `2.1.220` |
 | Goose               | `1.44.0`  |
diff --git a/VERSION b/VERSION
index 0ea3a94..0d91a54 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.2.0
+0.3.0