diff --git a/debian/control b/debian/control
index 94caef76c..3b549b717 100644
--- a/debian/control
+++ b/debian/control
@@ -2,7 +2,7 @@ Source: spot
 Section: science
 Priority: optional
 Maintainer: Alexandre Duret-Lutz <adl@lrde.epita.fr>
-Build-Depends: debhelper (>= 9), python3-all-dev, ipython3-notebook
+Build-Depends: debhelper (>= 9), python3-all-dev, ipython3-notebook, libltdl-dev
 Standards-Version: 3.9.6
 Homepage: http://spot.lrde.lip6.fr/