diff --git a/libp2p/cid.nim b/libp2p/cid.nim
index a89f5f59e9..fed4852390 100644
--- a/libp2p/cid.nim
+++ b/libp2p/cid.nim
@@ -63,7 +63,8 @@ const
     multiCodec("codex-manifest"),
     multiCodec("codex-block"),
     multiCodec("codex-slot-root"),
-    multiCodec("codex-proving-root")
+    multiCodec("codex-proving-root"),
+    multiCodec("codex-slot-cell"),
   ]
 
 proc initCidCodeTable(): Table[int, MultiCodec] {.compileTime.} =
diff --git a/libp2p/multicodec.nim b/libp2p/multicodec.nim
index b4c170b777..7a05d575d3 100644
--- a/libp2p/multicodec.nim
+++ b/libp2p/multicodec.nim
@@ -243,6 +243,7 @@ const MultiCodecList = [
   ("codex-root", 0xCD03),
   ("codex-slot-root", 0xCD04),
   ("codex-proving-root", 0xCD05),
+  ("codex-slot-cell", 0xCD06),
 ]
 
 type