diff --git a/src/linker/base_ext/base_arrays.c b/src/linker/base_ext/base_arrays.c
index 9cc83a8e..423ab684 100644
--- a/src/linker/base_ext/base_arrays.c
+++ b/src/linker/base_ext/base_arrays.c
@@ -63,6 +63,12 @@ u32_array_sort(U64 count, U32 *v)
   radsort(v, count, u32_is_before);
 }
 
+internal void
+u64_array_sort(U64 count, U64 *v)
+{
+  radsort(v, count, u64_is_before);
+}
+
 internal void
 u32_pair_radix_sort(U64 count, PairU32 *arr)
 {
diff --git a/src/linker/base_ext/base_arrays.h b/src/linker/base_ext/base_arrays.h
index 70531fb1..e1cd052d 100644
--- a/src/linker/base_ext/base_arrays.h
+++ b/src/linker/base_ext/base_arrays.h
@@ -31,6 +31,7 @@ internal U64Array  u64_array_from_list(Arena *arena, U64List *list);
 internal U64Array u64_array_remove_duplicates(Arena *arena, U64Array in);
 
 internal void u32_array_sort(U64 count, U32 *v);
+internal void u64_array_sort(U64 count, U64 *v);
 internal B32  u32_array_compare(U32Array a, U32Array b);
 
 internal U64 sum_array_u64(U64 count, U64 *v);