diff --git a/CHANGELOG.md b/CHANGELOG.md
index 72cb6bd199..5e1c20fc62 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -60,3 +60,4 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Document Updates
 * (x/foundation) [\#934](https://github.com/line/lbm-sdk/pull/934) Update permlinks in x/foundation documents
+* (x/collection,token) [\#944](https://github.com/line/lbm-sdk/pull/944) Update comments in the x/token,collection events proto
diff --git a/docs/core/proto-docs.md b/docs/core/proto-docs.md
index c291108b3e..98d40bbae0 100644
--- a/docs/core/proto-docs.md
+++ b/docs/core/proto-docs.md
@@ -9536,7 +9536,7 @@ Since: 0.46.0 (finschia)
 | ----- | ---- | ----- | ----------- |
 | `contract_id` | [string](#string) |  | contract id associated with the contract. |
 | `operator` | [string](#string) |  | address which triggered the modify. |
-| `changes` | [Attribute](#lbm.collection.v1.Attribute) | repeated | changes of the attributes applied. possible attribute keys are same as those of MsgModify. |
+| `changes` | [Attribute](#lbm.collection.v1.Attribute) | repeated | changes of the attributes applied. possible attribute keys are same as those of MsgModify. deprecated "base_img_uri" has been replaced by "uri" in the events. |
 
 
 
@@ -13055,7 +13055,7 @@ Since: 0.46.0 (finschia)
 | ----- | ---- | ----- | ----------- |
 | `contract_id` | [string](#string) |  | contract id associated with the contract. |
 | `operator` | [string](#string) |  | address which triggered the modify. |
-| `changes` | [Attribute](#lbm.token.v1.Attribute) | repeated | changes on the metadata of the class. possible attribute keys are same as those of MsgModify. |
+| `changes` | [Attribute](#lbm.token.v1.Attribute) | repeated | changes on the metadata of the class. possible attribute keys are same as those of MsgModify. deprecated "img_uri" has been replaced by "uri" in the events. |
 
 
 
diff --git a/proto/lbm/collection/v1/event.proto b/proto/lbm/collection/v1/event.proto
index 523a8e0ca1..d36c5ae1b5 100644
--- a/proto/lbm/collection/v1/event.proto
+++ b/proto/lbm/collection/v1/event.proto
@@ -249,6 +249,7 @@ message EventModifiedContract {
   string operator = 2;
   // changes of the attributes applied.
   // possible attribute keys are same as those of MsgModify.
+  // deprecated "base_img_uri" has been replaced by "uri" in the events.
   repeated Attribute changes = 3 [(gogoproto.nullable) = false];
 }
 
diff --git a/proto/lbm/token/v1/event.proto b/proto/lbm/token/v1/event.proto
index 59e05aa414..a21e61248e 100644
--- a/proto/lbm/token/v1/event.proto
+++ b/proto/lbm/token/v1/event.proto
@@ -182,5 +182,6 @@ message EventModified {
   string operator = 2;
   // changes on the metadata of the class.
   // possible attribute keys are same as those of MsgModify.
+  // deprecated "img_uri" has been replaced by "uri" in the events.
   repeated Attribute changes = 3 [(gogoproto.nullable) = false];
 }
diff --git a/x/collection/event.pb.go b/x/collection/event.pb.go
index f53760bf56..a47f72d317 100644
--- a/x/collection/event.pb.go
+++ b/x/collection/event.pb.go
@@ -1075,6 +1075,7 @@ type EventModifiedContract struct {
 	Operator string `protobuf:"bytes,2,opt,name=operator,proto3" json:"operator,omitempty"`
 	// changes of the attributes applied.
 	// possible attribute keys are same as those of MsgModify.
+	// deprecated "base_img_uri" has been replaced by "uri" in the events.
 	Changes []Attribute `protobuf:"bytes,3,rep,name=changes,proto3" json:"changes"`
 }
 
diff --git a/x/token/event.pb.go b/x/token/event.pb.go
index e192477e1b..c3535d55a3 100644
--- a/x/token/event.pb.go
+++ b/x/token/event.pb.go
@@ -750,6 +750,7 @@ type EventModified struct {
 	Operator string `protobuf:"bytes,2,opt,name=operator,proto3" json:"operator,omitempty"`
 	// changes on the metadata of the class.
 	// possible attribute keys are same as those of MsgModify.
+	// deprecated "img_uri" has been replaced by "uri" in the events.
 	Changes []Attribute `protobuf:"bytes,3,rep,name=changes,proto3" json:"changes"`
 }