diff --git a/message.go b/message.go
index 7bde46f..ef7f83f 100644
--- a/message.go
+++ b/message.go
@@ -178,11 +178,24 @@ type MessageFlags int
 
 // Valid MessageFlags values
 const (
-	MessageFlagsCrossPosted          MessageFlags = 1 << 0
-	MessageFlagsIsCrossPosted        MessageFlags = 1 << 1
-	MessageFlagsSupressEmbeds        MessageFlags = 1 << 2
+	// MessageFlagsCrossPosted This message has been published to subscribed channels (via Channel Following).
+	MessageFlagsCrossPosted MessageFlags = 1 << 0
+	// MessageFlagsIsCrossPosted this message originated from a message in another channel (via Channel Following).
+	MessageFlagsIsCrossPosted MessageFlags = 1 << 1
+	// MessageFlagsSupressEmbeds do not include any embeds when serializing this message.
+	MessageFlagsSupressEmbeds MessageFlags = 1 << 2
+	// MessageFlagsSourceMessageDeleted the source message for this crosspost has been deleted (via Channel Following).
 	MessageFlagsSourceMessageDeleted MessageFlags = 1 << 3
-	MessageFlagsUrgent               MessageFlags = 1 << 4
+	// MessageFlagsUrgent this message came from the urgent message system.
+	MessageFlagsUrgent MessageFlags = 1 << 4
+	// MessageFlagsHasThread this message has an associated thread, with the same id as the message.
+	MessageFlagsHasThread MessageFlags = 1 << 5
+	// MessageFlagsEphemeral this message is only visible to the user who invoked the Interaction.
+	MessageFlagsEphemeral MessageFlags = 1 << 6
+	// MessageFlagsLoading this message is an Interaction Response and the bot is "thinking".
+	MessageFlagsLoading MessageFlags = 1 << 7
+	// MessageFlagsFailedToMentionSomeRolesInThread this message failed to mention some roles and add their members to the thread.
+	MessageFlagsFailedToMentionSomeRolesInThread MessageFlags = 1 << 8
 )
 
 // File stores info about files you e.g. send in messages.