diff --git a/pkgs/development/tools/comby/default.nix b/pkgs/development/tools/comby/default.nix
index 4299c122109a..49532070b2b4 100644
--- a/pkgs/development/tools/comby/default.nix
+++ b/pkgs/development/tools/comby/default.nix
@@ -79,7 +79,6 @@ mkCombyPackage {
     ocamlPackages.patience_diff
     ocamlPackages.toml
     ocamlPackages.cohttp-lwt-unix
-    ocamlPackages.opium
     ocamlPackages.textutils
     ocamlPackages.jst-config
     ocamlPackages.parany