diff --git a/otherlibs/stdune/src/dune b/otherlibs/stdune/src/dune
index 62f5b66e400..29578f6ba1d 100644
--- a/otherlibs/stdune/src/dune
+++ b/otherlibs/stdune/src/dune
@@ -7,6 +7,7 @@
   unix
   csexp
   threads
+  threads.posix
   (re_export top-closure)
   (re_export ordering)
   (re_export dyn)