diff --git a/SessionMessagingKit/Jobs/Types/DisappearingMessagesJob.swift b/SessionMessagingKit/Jobs/Types/DisappearingMessagesJob.swift
index d07fe7e88..e673b5661 100644
--- a/SessionMessagingKit/Jobs/Types/DisappearingMessagesJob.swift
+++ b/SessionMessagingKit/Jobs/Types/DisappearingMessagesJob.swift
@@ -94,7 +94,7 @@ public extension DisappearingMessagesJob {
             let serverHashes = interactions.compactMap { $0.serverHash }
             guard let expiresInSeconds = expiresInSeconds, !serverHashes.isEmpty else { return }
             
-            let expirationTimestamp: Int64 = Int64(ceil(startedAtMs + expiresInSeconds))
+            let expirationTimestamp: Int64 = Int64(ceil(startedAtMs + expiresInSeconds * 1000))
             let userPublicKey: String = getUserHexEncodedPublicKey(db)
             let threadId: String = interactions[0].threadId
             
diff --git a/SessionMessagingKit/Messages/Control Messages/SyncedExpiriesMessage.swift b/SessionMessagingKit/Messages/Control Messages/SyncedExpiriesMessage.swift
index 95f7ababa..897b94b64 100644
--- a/SessionMessagingKit/Messages/Control Messages/SyncedExpiriesMessage.swift	
+++ b/SessionMessagingKit/Messages/Control Messages/SyncedExpiriesMessage.swift	
@@ -36,6 +36,8 @@ public final class SyncedExpiriesMessage: ControlMessage {
     }
     
     public override func encode(to encoder: Encoder) throws {
+        try super.encode(to: encoder)
+        
         var container: KeyedEncodingContainer<CodingKeys> = encoder.container(keyedBy: CodingKeys.self)
 
         try container.encode(conversationExpiries, forKey: .conversationExpiries)
diff --git a/SessionMessagingKit/Sending & Receiving/Message Handling/MessageReceiver+SyncedExpiriesMessage.swift b/SessionMessagingKit/Sending & Receiving/Message Handling/MessageReceiver+SyncedExpiriesMessage.swift
index d95ffb84b..344e2c30f 100644
--- a/SessionMessagingKit/Sending & Receiving/Message Handling/MessageReceiver+SyncedExpiriesMessage.swift	
+++ b/SessionMessagingKit/Sending & Receiving/Message Handling/MessageReceiver+SyncedExpiriesMessage.swift	
@@ -11,6 +11,21 @@ extension MessageReceiver {
         message: SyncedExpiriesMessage,
         dependencies: SMKDependencies
     ) throws {
-        print("Ryan Test: Receive SyncedExpiriesMessage")
+        let userPublicKey: String = getUserHexEncodedPublicKey(db, dependencies: dependencies)
+        guard userPublicKey == message.sender else { return }
+        
+        message.conversationExpiries.forEach { (syncTarget, expiries) in
+            guard let disappearingMessageConfiguration = try? DisappearingMessagesConfiguration.fetchOne(db, id: syncTarget) else { return }
+            expiries.forEach { syncExpiry in
+                let startedAtMs: Double = Double(syncExpiry.expirationTimestamp) - disappearingMessageConfiguration.durationSeconds * 1000
+                
+                let changeCount: Int? = try? Interaction
+                    .filter(
+                        Interaction.Columns.threadId == syncTarget &&
+                        Interaction.Columns.serverHash == syncExpiry.serverHash
+                    )
+                    .updateAll(db, Interaction.Columns.expiresStartedAtMs.set(to: startedAtMs))
+            }
+        }
     }
 }