diff --git a/dune-project b/dune-project
index 05bd945..0039819 100644
--- a/dune-project
+++ b/dune-project
@@ -21,6 +21,9 @@
   (name glob)
   (synopsis "A pure OCaml implementation of glob(3)")
   (description "Glob provides a simple implementation of glob(3).")
+  (depopts
+    eio
+   )
   (depends
     fmt
     (alcotest :with-test)
diff --git a/glob.opam b/glob.opam
index ffcb4cf..463e16e 100644
--- a/glob.opam
+++ b/glob.opam
@@ -15,6 +15,7 @@ depends: [
   "eio_main" {with-test}
   "odoc" {with-doc}
 ]
+depopts: ["eio"]
 build: [
   ["dune" "subst"] {dev}
   [