diff --git a/ocaml-curses.spec b/ocaml-curses.spec
index 529b16a..4fb02a2 100644
--- a/ocaml-curses.spec
+++ b/ocaml-curses.spec
@@ -30,6 +30,7 @@ BuildRequires:  ocaml
 BuildRequires:  ocaml-dune
 BuildRequires:  ocaml-rpm-macros >= 20191101
 BuildRequires:  ocamlfind(dune.configurator)
+BuildRequires:  pkg-config
 
 %description
 OCaml bindings for ncurses.