diff --git a/dune-project b/dune-project
index a34ed28a..16ac3e77 100644
--- a/dune-project
+++ b/dune-project
@@ -26,7 +26,7 @@
   (odoc :with-doc)
   (hmap :with-test)
   picos
-  picos_sync
+  picos_std
   (mdx
    (and
     (>= 1.9.0)
diff --git a/moonpool.opam b/moonpool.opam
index 70ed53b0..9ca18dad 100644
--- a/moonpool.opam
+++ b/moonpool.opam
@@ -19,7 +19,7 @@ depends: [
   "odoc" {with-doc}
   "hmap" {with-test}
   "picos"
-  "picos_sync"
+  "picos_std"
   "mdx" {>= "1.9.0" & with-test}
 ]
 depopts: [