diff --git a/src/util/dune b/src/util/dune
index 7d7f2a4..39f8bcb 100644
--- a/src/util/dune
+++ b/src/util/dune
@@ -3,7 +3,7 @@
   (public_name trace.private.util)
   (synopsis "internal utilities for trace. No guarantees of stability.")
   (name trace_private_util)
-  (libraries trace.core mtime mtime.clock.os atomic unix threads
+  (libraries trace.core mtime mtime.clock.os unix threads
              (select domain_util.ml from
                      (base-domain -> domain_util.real.ml)
                      ( -> domain_util.dummy.ml))))