diff --git a/ocaml/.depend b/ocaml/.depend
index 26ff236af4c..ba73b490b3e 100644
--- a/ocaml/.depend
+++ b/ocaml/.depend
@@ -575,7 +575,6 @@ parsing/parse.cmi : \
     parsing/parsetree.cmi \
     parsing/longident.cmi
 parsing/parser.cmo : \
-    utils/warnings.cmi \
     parsing/syntaxerr.cmi \
     parsing/parsetree.cmi \
     parsing/longident.cmi \
@@ -592,7 +591,6 @@ parsing/parser.cmo : \
     parsing/ast_helper.cmi \
     parsing/parser.cmi
 parsing/parser.cmx : \
-    utils/warnings.cmx \
     parsing/syntaxerr.cmx \
     parsing/parsetree.cmi \
     parsing/longident.cmx \
diff --git a/ocaml/otherlibs/dynlink/.depend b/ocaml/otherlibs/dynlink/.depend
index b55bcf5ecae..2a6b0ffc99a 100644
--- a/ocaml/otherlibs/dynlink/.depend
+++ b/ocaml/otherlibs/dynlink/.depend
@@ -3,6 +3,9 @@ byte/dynlink.cmo : \
     byte/dynlink_compilerlibs.cmi \
     dynlink_common.cmi \
     byte/dynlink.cmi
+dynlink.cmo : \
+    dynlink_types.cmi \
+    dynlink.cmi
 dynlink.cmi :
 dynlink_common.cmo : \
     dynlink_types.cmi \
@@ -19,6 +22,9 @@ dynlink_platform_intf.cmi : \
 dynlink_types.cmo : \
     dynlink_types.cmi
 dynlink_types.cmi :
+dynlink.cmx : \
+    dynlink_types.cmx \
+    dynlink.cmi
 dynlink_common.cmx : \
     dynlink_types.cmx \
     dynlink_platform_intf.cmx \
diff --git a/ocaml/stdlib/.depend b/ocaml/stdlib/.depend
index 7d668ed6eb8..e41db7dc9c2 100644
--- a/ocaml/stdlib/.depend
+++ b/ocaml/stdlib/.depend
@@ -255,11 +255,17 @@ stdlib__Digest.cmx : digest.ml \
     stdlib__Digest.cmi
 stdlib__Digest.cmi : digest.mli \
     stdlib.cmi
-domain.cmo : \
-    domain.cmi
-domain.cmx : \
-    domain.cmi
-domain.cmi :
+stdlib__Domain.cmo : domain.ml \
+    stdlib__Sys.cmi \
+    stdlib__Obj.cmi \
+    stdlib__Array.cmi \
+    stdlib__Domain.cmi
+stdlib__Domain.cmx : domain.ml \
+    stdlib__Sys.cmx \
+    stdlib__Obj.cmx \
+    stdlib__Array.cmx \
+    stdlib__Domain.cmi
+stdlib__Domain.cmi : domain.mli
 effect.cmo : \
     effect.cmi
 effect.cmx : \
diff --git a/ocaml/stdlib/StdlibModules b/ocaml/stdlib/StdlibModules
index bbfc9dcf2d2..0ce73c14d1e 100644
--- a/ocaml/stdlib/StdlibModules
+++ b/ocaml/stdlib/StdlibModules
@@ -77,6 +77,7 @@ STDLIB_MODULE_BASENAMES = \
   fun \
   gc \
   digest \
+  domain \
   bigarray \
   random \
   hashtbl \
diff --git a/ocaml/stdlib/domain.ml b/ocaml/stdlib/domain.ml
index 4f4b4ff1182..af58ba96ee7 100644
--- a/ocaml/stdlib/domain.ml
+++ b/ocaml/stdlib/domain.ml
@@ -1,3 +1,4 @@
+# 1 "domain.ml"
 (**************************************************************************)
 (*                                                                        *)
 (*                                 OCaml                                  *)
@@ -16,6 +17,10 @@
 (*                                                                        *)
 (**************************************************************************)
 
+open! Stdlib
+
+[@@@ocaml.flambda_o3]
+
 (* CR ocaml 5 runtime: domain-local-storage assumes single-domain,
    i.e. calling split will never be necessary. *)
 
diff --git a/ocaml/stdlib/domain.mli b/ocaml/stdlib/domain.mli
index 0e2939be7f5..08d5b5cce29 100644
--- a/ocaml/stdlib/domain.mli
+++ b/ocaml/stdlib/domain.mli
@@ -1,3 +1,4 @@
+# 1 "domain.mli"
 (**************************************************************************)
 (*                                                                        *)
 (*                                 OCaml                                  *)
diff --git a/ocaml/toplevel/byte/dune b/ocaml/toplevel/byte/dune
index 9c2afad327e..bec0ce6c05c 100644
--- a/ocaml/toplevel/byte/dune
+++ b/ocaml/toplevel/byte/dune
@@ -45,6 +45,7 @@
                     stdlib__Char
                     stdlib__Complex
                     stdlib__Digest
+                    stdlib__Domain
                     stdlib__Either
                     stdlib__Ephemeron
                     stdlib__Filename