diff --git a/packages/melange-moment/melange-moment.0.4.0/opam b/packages/melange-moment/melange-moment.0.4.0/opam
index e1f1e503749..7208bf1dd9f 100644
--- a/packages/melange-moment/melange-moment.0.4.0/opam
+++ b/packages/melange-moment/melange-moment.0.4.0/opam
@@ -12,6 +12,7 @@ depends: [
   "melange" {>= "3.0.0"}
   "reason"
   "melange-jest" {with-test}
+  "conf-npm" {with-test}
   "odoc" {with-doc}
 ]
 build: [