diff --git a/packages/zzkt/soupault.scm b/packages/zzkt/soupault.scm
index cdf965a..044d2c5 100644
--- a/packages/zzkt/soupault.scm
+++ b/packages/zzkt/soupault.scm
@@ -26,6 +26,7 @@
   #:use-module (gnu packages ocaml)
   #:use-module (gnu packages glib)
   #:use-module (gnu packages libevent)
+  #:use-module (gnu packages pkg-config)
   #:use-module (guix git-download)
   #:use-module ((guix licenses) #:prefix license:))