diff --git a/packages/agent/CHANGELOG.md b/packages/agent/CHANGELOG.md
index c808f6d61..6f6e8de54 100644
--- a/packages/agent/CHANGELOG.md
+++ b/packages/agent/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.66.0] - 2026-04-08
 
 ## [0.65.2] - 2026-04-06
diff --git a/packages/ai/CHANGELOG.md b/packages/ai/CHANGELOG.md
index 8ec15fe45..33c12783e 100644
--- a/packages/ai/CHANGELOG.md
+++ b/packages/ai/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.66.0] - 2026-04-08
 
 ### Fixed
diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index 74725ee1b..ac8de9c90 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.66.0] - 2026-04-08
 
 ### New Features
diff --git a/packages/mom/CHANGELOG.md b/packages/mom/CHANGELOG.md
index e7988ad26..5a6880aba 100644
--- a/packages/mom/CHANGELOG.md
+++ b/packages/mom/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.66.0] - 2026-04-08
 
 ## [0.65.2] - 2026-04-06
diff --git a/packages/tui/CHANGELOG.md b/packages/tui/CHANGELOG.md
index 2bb0dc373..d8be9f000 100644
--- a/packages/tui/CHANGELOG.md
+++ b/packages/tui/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.66.0] - 2026-04-08
 
 ## [0.65.2] - 2026-04-06
diff --git a/packages/web-ui/CHANGELOG.md b/packages/web-ui/CHANGELOG.md
index b8c7686e1..375d21d7c 100644
--- a/packages/web-ui/CHANGELOG.md
+++ b/packages/web-ui/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.66.0] - 2026-04-08
 
 ## [0.65.2] - 2026-04-06