diff --git a/packages/agent/CHANGELOG.md b/packages/agent/CHANGELOG.md
index dcdd6ee7..6d2aa0c3 100644
--- a/packages/agent/CHANGELOG.md
+++ b/packages/agent/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.40.0] - 2026-01-08
 
 ## [0.39.1] - 2026-01-08
diff --git a/packages/ai/CHANGELOG.md b/packages/ai/CHANGELOG.md
index 575532e6..dd9f5a70 100644
--- a/packages/ai/CHANGELOG.md
+++ b/packages/ai/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.40.0] - 2026-01-08
 
 ## [0.39.1] - 2026-01-08
diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index f9198fdf..4e6366a2 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.40.0] - 2026-01-08
 
 ### Added
diff --git a/packages/mom/CHANGELOG.md b/packages/mom/CHANGELOG.md
index 88466b5d..7b0748c5 100644
--- a/packages/mom/CHANGELOG.md
+++ b/packages/mom/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.40.0] - 2026-01-08
 
 ## [0.39.1] - 2026-01-08
diff --git a/packages/tui/CHANGELOG.md b/packages/tui/CHANGELOG.md
index d6329017..df5daaaa 100644
--- a/packages/tui/CHANGELOG.md
+++ b/packages/tui/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.40.0] - 2026-01-08
 
 ## [0.39.1] - 2026-01-08
diff --git a/packages/web-ui/CHANGELOG.md b/packages/web-ui/CHANGELOG.md
index 5f021ea4..b3ea3d45 100644
--- a/packages/web-ui/CHANGELOG.md
+++ b/packages/web-ui/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [0.40.0] - 2026-01-08
 
 ## [0.39.1] - 2026-01-08