diff --git a/pkgs/development/ocaml-modules/paf/default.nix b/pkgs/development/ocaml-modules/paf/default.nix
index ca04e6bcfe37..0c25da1453ab 100644
--- a/pkgs/development/ocaml-modules/paf/default.nix
+++ b/pkgs/development/ocaml-modules/paf/default.nix
@@ -19,6 +19,7 @@
 , uri
 , alcotest-lwt
 , cstruct
+, httpaf
 }:
 
 buildDunePackage rec {
@@ -43,6 +44,7 @@ buildDunePackage rec {
     tls
     cstruct
     tcpip
+    httpaf
   ];
 
   doCheck = true;