diff --git a/packages/agent/CHANGELOG.md b/packages/agent/CHANGELOG.md
index d63880196..771e6df16 100644
--- a/packages/agent/CHANGELOG.md
+++ b/packages/agent/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.42.3] - 2026-01-10
 
 ## [0.42.2] - 2026-01-10
diff --git a/packages/ai/CHANGELOG.md b/packages/ai/CHANGELOG.md
index bb3cb0639..da2cb07d5 100644
--- a/packages/ai/CHANGELOG.md
+++ b/packages/ai/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.42.3] - 2026-01-10
 
 ### Changed
diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index 16b19cbf8..986818ff8 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.42.3] - 2026-01-10
 
 ### Changed
diff --git a/packages/mom/CHANGELOG.md b/packages/mom/CHANGELOG.md
index 4fa380da0..7c30567fc 100644
--- a/packages/mom/CHANGELOG.md
+++ b/packages/mom/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.42.3] - 2026-01-10
 
 ## [0.42.2] - 2026-01-10
diff --git a/packages/tui/CHANGELOG.md b/packages/tui/CHANGELOG.md
index bc147fed4..733235248 100644
--- a/packages/tui/CHANGELOG.md
+++ b/packages/tui/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.42.3] - 2026-01-10
 
 ## [0.42.2] - 2026-01-10
diff --git a/packages/web-ui/CHANGELOG.md b/packages/web-ui/CHANGELOG.md
index b2dad5bc4..6a7ae9f5c 100644
--- a/packages/web-ui/CHANGELOG.md
+++ b/packages/web-ui/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.42.3] - 2026-01-10
 
 ## [0.42.2] - 2026-01-10