diff --git a/packages/agent/CHANGELOG.md b/packages/agent/CHANGELOG.md
index fb0085944..020518629 100644
--- a/packages/agent/CHANGELOG.md
+++ b/packages/agent/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.55.3] - 2026-02-27
 
 ## [0.55.2] - 2026-02-27
diff --git a/packages/ai/CHANGELOG.md b/packages/ai/CHANGELOG.md
index a58e6e23c..b8ee0f44e 100644
--- a/packages/ai/CHANGELOG.md
+++ b/packages/ai/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.55.3] - 2026-02-27
 
 ## [0.55.2] - 2026-02-27
diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index 2046046e6..8948106a3 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.55.3] - 2026-02-27
 
 ### Fixed
diff --git a/packages/mom/CHANGELOG.md b/packages/mom/CHANGELOG.md
index a4340f011..a2ad270bc 100644
--- a/packages/mom/CHANGELOG.md
+++ b/packages/mom/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.55.3] - 2026-02-27
 
 ## [0.55.2] - 2026-02-27
diff --git a/packages/tui/CHANGELOG.md b/packages/tui/CHANGELOG.md
index d210b99f9..5deb41811 100644
--- a/packages/tui/CHANGELOG.md
+++ b/packages/tui/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.55.3] - 2026-02-27
 
 ## [0.55.2] - 2026-02-27
diff --git a/packages/web-ui/CHANGELOG.md b/packages/web-ui/CHANGELOG.md
index 2ca50101e..1f3a9e46c 100644
--- a/packages/web-ui/CHANGELOG.md
+++ b/packages/web-ui/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.55.3] - 2026-02-27
 
 ## [0.55.2] - 2026-02-27