diff --git a/Makefile b/Makefile
index a5f0a74..a655d68 100644
--- a/Makefile
+++ b/Makefile
@@ -26,6 +26,9 @@ SUBPKGS += replication/internal/queue
 SUBPKGS += replication/internal/diff
 SUBPKGS += tlsconf
 SUBPKGS += util
+SUBPKGS += util/socketpair
+SUBPKGS += util/watchdog
+SUBPKGS += util/envconst
 SUBPKGS += version
 SUBPKGS += zfs