diff --git a/Project.toml b/Project.toml
index fa95399a..714af342 100644
--- a/Project.toml
+++ b/Project.toml
@@ -26,7 +26,7 @@ GeoStatsBase = "0.7"
 ImageFiltering = "0.6"
 ImageMorphology = "0.2"
 LightGraphs = "1.2"
-LightGraphsFlows = "0.3"
+LightGraphsFlows = "0.3, 0.4"
 Primes = "0.4"
 ProgressMeter = "1.1"
 RecipesBase = "0.7, 0.8"