diff --git a/src/FishyFlip/Models/FrameCommit.cs b/src/FishyFlip/Models/FrameCommit.cs
index c90c73dd..2391ca0a 100644
--- a/src/FishyFlip/Models/FrameCommit.cs
+++ b/src/FishyFlip/Models/FrameCommit.cs
@@ -17,7 +17,7 @@ public class FrameCommit
     public FrameCommit(CBORObject obj, ILogger? logger = default)
     {
         this.Ops = obj["ops"]?.Values.Select(n => new Ops(n)).ToArray();
-        this.Seq = obj["seq"].AsInt32();
+        this.Seq = obj["seq"].ToObject<long>();
         this.Blocks = obj["blocks"]?.GetByteString();
 #pragma warning disable CS0618
         this.Prev = obj["prev"]?.ToATCid(logger);
@@ -40,7 +40,7 @@ public FrameCommit(CBORObject obj, ILogger? logger = default)
     /// <summary>
     /// Gets the sequence.
     /// </summary>
-    public int Seq { get; }
+    public long Seq { get; }
 
     /// <summary>
     /// Gets the handle.
diff --git a/src/FishyFlip/Models/FrameHandle.cs b/src/FishyFlip/Models/FrameHandle.cs
index 9a419740..88cfe57e 100644
--- a/src/FishyFlip/Models/FrameHandle.cs
+++ b/src/FishyFlip/Models/FrameHandle.cs
@@ -16,7 +16,7 @@ public class FrameHandle
     public FrameHandle(CBORObject obj)
     {
         this.Did = obj["did"] is not null ? ATDid.Create(obj["did"].AsString()) : null;
-        this.Seq = obj["seq"].AsInt32();
+        this.Seq = obj["seq"].ToObject<long>();
         this.Handle = obj["handle"]?.AsString();
         this.Time = obj["time"] is not null ? obj["time"].ToDateTime() : null;
     }
@@ -29,7 +29,7 @@ public FrameHandle(CBORObject obj)
     /// <summary>
     /// Gets the sequence number of the frame handle.
     /// </summary>
-    public int Seq { get; }
+    public long Seq { get; }
 
     /// <summary>
     /// Gets the handle string of the frame handle.
diff --git a/src/FishyFlip/Models/FrameMigrate.cs b/src/FishyFlip/Models/FrameMigrate.cs
index 1117d703..ad5109d9 100644
--- a/src/FishyFlip/Models/FrameMigrate.cs
+++ b/src/FishyFlip/Models/FrameMigrate.cs
@@ -16,7 +16,7 @@ public class FrameMigrate
     public FrameMigrate(CBORObject obj)
     {
         this.Did = obj["did"] is not null ? ATDid.Create(obj["did"].AsString()) : null;
-        this.Seq = obj["seq"].AsInt32();
+        this.Seq = obj["seq"].ToObject<long>();
         this.MigrateTo = obj["migrateTo"]?.AsString();
         this.Time = obj["time"] is not null ? obj["time"].ToDateTime() : null;
     }
@@ -29,7 +29,7 @@ public FrameMigrate(CBORObject obj)
     /// <summary>
     /// Gets the sequence number of the frame migration.
     /// </summary>
-    public int Seq { get; }
+    public long Seq { get; }
 
     /// <summary>
     /// Gets the migration destination of the frame.
diff --git a/src/FishyFlip/Models/FrameTombstone.cs b/src/FishyFlip/Models/FrameTombstone.cs
index bdeefa18..93a078e2 100644
--- a/src/FishyFlip/Models/FrameTombstone.cs
+++ b/src/FishyFlip/Models/FrameTombstone.cs
@@ -16,7 +16,7 @@ public class FrameTombstone
     public FrameTombstone(CBORObject obj)
     {
         this.Did = obj["did"] is not null ? ATDid.Create(obj["did"].AsString()) : null;
-        this.Seq = obj["seq"].AsInt32();
+        this.Seq = obj["seq"].ToObject<long>();
         this.Time = obj["time"] is not null ? obj["time"].ToDateTime() : null;
     }
 
@@ -28,7 +28,7 @@ public FrameTombstone(CBORObject obj)
     /// <summary>
     /// Gets the sequence number of the frame.
     /// </summary>
-    public int Seq { get; }
+    public long Seq { get; }
 
     /// <summary>
     /// Gets the timestamp of the tombstone.