diff --git a/.changelog/44572.txt b/.changelog/44572.txt
new file mode 100644
index 000000000000..57522bfb2925
--- /dev/null
+++ b/.changelog/44572.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+resource/aws_ivschat_room: Set `maximum_message_rate_per_second` validation maximum to `100`
+```
diff --git a/internal/service/ivschat/room.go b/internal/service/ivschat/room.go
index a61867da6d3c..1e868752f14f 100644
--- a/internal/service/ivschat/room.go
+++ b/internal/service/ivschat/room.go
@@ -67,7 +67,7 @@ func ResourceRoom() *schema.Resource {
 				Type:         schema.TypeInt,
 				Optional:     true,
 				Computed:     true,
-				ValidateFunc: validation.IntBetween(1, 10),
+				ValidateFunc: validation.IntBetween(1, 100),
 			},
 			"message_review_handler": {
 				Type:     schema.TypeList,