diff --git a/fluffy/tests/portal_spec_tests/mainnet/test_portal_wire_encoding.nim b/fluffy/tests/portal_spec_tests/mainnet/test_portal_wire_encoding.nim
index ea60610de..6e006f9c5 100644
--- a/fluffy/tests/portal_spec_tests/mainnet/test_portal_wire_encoding.nim
+++ b/fluffy/tests/portal_spec_tests/mainnet/test_portal_wire_encoding.nim
@@ -1,5 +1,5 @@
-# Nimbus - Portal Network
-# Copyright (c) 2021 Status Research & Development GmbH
+# Fluffy
+# Copyright (c) 2021-2023 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@@ -189,6 +189,21 @@ suite "Portal Wire Protocol Message Encodings":
       message.content.enrs[0] == ByteList(e1.raw)
       message.content.enrs[1] == ByteList(e2.raw)
 
+  test "Content Response - empty enrs":
+    let
+      enrs = List[ByteList, 32].init(@[])
+      c = ContentMessage(contentMessageType: enrsType, enrs: enrs)
+    let encoded = encodeMessage(c)
+    check encoded.toHex == "0502"
+
+    let decoded = decodeMessage(encoded)
+    check decoded.isOk()
+    let message = decoded.get()
+    check:
+      message.kind == MessageKind.content
+      message.content.contentMessageType == enrsType
+      message.content.enrs.len() == 0
+
   test "Offer Request":
     let
       contentKeys = ContentKeysList(List(@[ByteList(@[byte 0x01, 0x02, 0x03])]))
diff --git a/vendor/nim-ssz-serialization b/vendor/nim-ssz-serialization
index edf07d4f7..f87c99be0 160000
--- a/vendor/nim-ssz-serialization
+++ b/vendor/nim-ssz-serialization
@@ -1 +1 @@
-Subproject commit edf07d4f7e0cb27afd207aa183c23cf448082d1b
+Subproject commit f87c99be04f3051fe2d9b4facf5e6e71251e8555