diff --git a/rpm-ostree-toolbox.spec b/rpm-ostree-toolbox.spec
index 284f511..4cdf08a 100644
--- a/rpm-ostree-toolbox.spec
+++ b/rpm-ostree-toolbox.spec
@@ -17,6 +17,7 @@ BuildRequires: gtk-doc
 BuildRequires: gnome-common
 BuildRequires: pkgconfig(ostree-1)
 BuildRequires: pkgconfig(libgsystem)
+BuildRequires: pkgconfig(json-glib-1.0)
 
 Requires: gjs
 Requires: libguestfs-tools-c