diff --git a/Project.toml b/Project.toml
index 2b439163a..2d1224150 100644
--- a/Project.toml
+++ b/Project.toml
@@ -95,6 +95,7 @@ FileIO = "1"
 FixedPointNumbers = "0.8"
 GeometricalPredicates = "0.4"
 GeometryBasics = "0.4"
+Graphs = "1"
 ImageCore = "0.8, 0.9, 0.10"
 ImageDraw = "0.2"
 ImageFeatures = "0.5"