diff --git a/doi2bib.opam b/doi2bib.opam
index 40eaf09..f3d77a9 100644
--- a/doi2bib.opam
+++ b/doi2bib.opam
@@ -21,6 +21,9 @@ depends: [
   "re" {>= "1.0.0"}
   "odoc" {with-doc}
 ]
+conflicts: [
+   "result" {< "1.5"} # uses Result.map but result can be pulled via lwt and takes over the Result module
+]
 build: [
   ["dune" "subst"] {dev}
   [