diff --git a/llvm/lib/Support/BLAKE3/llvm_blake3_prefix.h b/llvm/lib/Support/BLAKE3/llvm_blake3_prefix.h
index 3cee3691e4cf7..d5be360815add 100644
--- a/llvm/lib/Support/BLAKE3/llvm_blake3_prefix.h
+++ b/llvm/lib/Support/BLAKE3/llvm_blake3_prefix.h
@@ -34,6 +34,8 @@
 #define _blake3_compress_in_place_avx512 _llvm_blake3_compress_in_place_avx512
 #define blake3_compress_xof_avx512 llvm_blake3_compress_xof_avx512
 #define _blake3_compress_xof_avx512 _llvm_blake3_compress_xof_avx512
+#define blake3_xof_many_avx512 llvm_blake3_xof_many_avx512
+#define _blake3_xof_many_avx512 _llvm_blake3_xof_many_avx512
 #define blake3_hash_many_avx512 llvm_blake3_hash_many_avx512
 #define _blake3_hash_many_avx512 _llvm_blake3_hash_many_avx512
 #define blake3_hash_many_neon llvm_blake3_hash_many_neon