diff --git a/fizz/record/Types.cpp b/fizz/record/Types.cpp
index 9a54c3c83c..8d3a1aa139 100644
--- a/fizz/record/Types.cpp
+++ b/fizz/record/Types.cpp
@@ -269,6 +269,8 @@ std::string toString(NamedGroup group) {
       return "secp521r1";
     case NamedGroup::x25519:
       return "x25519";
+    case NamedGroup::x448:
+      return "x448";
     case NamedGroup::SecP256r1MLKEM768:
       return "SecP256r1MLKEM768";
     case fizz::NamedGroup::X25519MLKEM512_FB:
diff --git a/fizz/record/Types.h b/fizz/record/Types.h
index f9ac17185c..1ecc3f2338 100644
--- a/fizz/record/Types.h
+++ b/fizz/record/Types.h
@@ -345,6 +345,7 @@ enum class NamedGroup : uint16_t {
   secp384r1 = 24,
   secp521r1 = 25,
   x25519 = 29,
+  x448 = 30,
   SecP256r1MLKEM768 = 4587,
   X25519MLKEM512_FB = 65026,
   X25519MLKEM768 = 4588,