2 files changed, 5 insertions, 2 deletions
diff --git a/.SRCINFO b/.SRCINFO
index a94d91a8cb68..5f19abc22796 100644
--- a/.SRCINFO
+++ b/.SRCINFO
@@ -9,7 +9,8 @@ pkgbase = workcraft-git
 	makedepends = git
 	makedepends = java-environment
 	depends = java-runtime
-	optdepends = graphviz: Graph manipulation
+	optdepends = graphviz: Graph manipulation,
+	optdepends = stack: Concepts support
 	provides = workcraft
 	conflicts = workcraft
 	source = git+https://github.com/tuura/workcraft.git
diff --git a/PKGBUILD b/PKGBUILD
index 30e514fe44f4..2a27fe653b26 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -8,7 +8,9 @@ url="http://www.workcraft.org/"
 license=('GPL')
 makedepends=('git' 'java-environment')
 depends=('java-runtime')
-optdepends=('graphviz: Graph manipulation')
+optdepends=(
+	'graphviz: Graph manipulation',
+	'stack: Concepts support')
 provides=('workcraft')
 conflicts=('workcraft')
 source=(git+https://github.com/tuura/workcraft.git git+https://github.com/tuura/workcraft-dist-template.git git+https://github.com/tuura/workcraft-doc.git workcraft_start.sh)