diff --git a/src/util/dune b/src/util/dune
index 123371b7..bef06885 100644
--- a/src/util/dune
+++ b/src/util/dune
@@ -6,5 +6,6 @@
   (re_export opentelemetry.atomic)
   ptime
   threads
+  threads.posix
   opentelemetry.domain)
  (synopsis "Basic utilities for opentelemetry"))