diff --git a/CHANGELOG-PRERELEASE.md b/CHANGELOG-PRERELEASE.md
index ed32e8702..802247995 100644
--- a/CHANGELOG-PRERELEASE.md
+++ b/CHANGELOG-PRERELEASE.md
@@ -10,6 +10,8 @@ The format is based on [Keep a Changelog].
 ### Added
 
 ### Changed
+- It will be error if read/write mesh is off in play mode again `#1018`
+  - I found that we may not possible to read mesh with r/w mesh off mode in play mode with the Av3Emulator.
 
 ### Deprecated
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f40d76afe..65c02ad14 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -87,6 +87,8 @@ The format is based on [Keep a Changelog].
 - Dropping GameObject to PrefabSafeSet adds the All components on the GameObject to the PrefabSafeSet `#960`
   - You can add all PhysBones on the GameObject by dropping the GameObject to the MergePhysBone component.
 - MergeSkinnedMesh now warns if Root Bone or Anchor Override are not set `#963`
+- It will be error if read/write mesh is off in play mode again `#1018`
+  - I found that we may not possible to read mesh with r/w mesh off mode in play mode with the Av3Emulator.
 
 ### Deprecated