diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
index 576e507824740..aa0a7c52246ba 100644
--- a/src/bootstrap/dist.rs
+++ b/src/bootstrap/dist.rs
@@ -810,6 +810,7 @@ impl Step for Src {
             "src/libterm",
             "src/jemalloc",
             "src/libprofiler_builtins",
+            "src/stdsimd",
         ];
         let std_src_dirs_exclude = [
             "src/libcompiler_builtins/compiler-rt/test",