diff --git a/srcpkgs/openbabel/template b/srcpkgs/openbabel/template
index 55717228e2a..41db848d74e 100644
--- a/srcpkgs/openbabel/template
+++ b/srcpkgs/openbabel/template
@@ -6,7 +6,7 @@ _ver=${version//./-}
 build_style=cmake
 build_helper=cmake-wxWidgets-gtk3
 hostmakedepends="pkg-config"
-makedepends="cairo-devel libxml2-devel eigen3.2 wxWidgets-gtk3-devel"
+makedepends="cairo-devel libxml2-devel eigen3.2 wxWidgets-gtk3-devel rapidjson"
 short_desc="Open Source Chemistry Toolbox"
 maintainer="Orphaned <orphan@voidlinux.org>"
 license="GPL-2.0-only"