diff --git a/matrix_keycloak_bot.py b/matrix_keycloak_bot.py
index 7a5f868..9fc81e6 100644
--- a/matrix_keycloak_bot.py
+++ b/matrix_keycloak_bot.py
@@ -18,6 +18,7 @@ from nio import (
     KeyVerificationCancel,
     ToDeviceError,
     UnknownToDeviceEvent,
+    ToDeviceMessage,
 )
 
 # ------------------------------------------------------------------------------
@@ -155,14 +156,19 @@ async def on_to_device(client: AsyncClient, event):
                     "methods": ["m.sas.v1"],
                     "transaction_id": tx_id,
                 }
-                resp = await client.to_device(
+                
+                # Wrap the event type and dictionary in a ToDeviceMessage object
+                message = ToDeviceMessage(
                     "m.key.verification.ready",
                     {
                         event.sender: {
                             from_device: ready_content
                         }
-                    },
+                    }
                 )
+                
+                resp = await client.to_device(message)
+                
                 if isinstance(resp, ToDeviceError):
                     print(f"Failed to send verification ready: {resp}")
                 else: