diff --git a/Project.toml b/Project.toml
index 054e7c8..efa5a96 100644
--- a/Project.toml
+++ b/Project.toml
@@ -20,6 +20,7 @@ Triangle = "56f361f5-126b-55db-87fb-1c71988fcde4"
 
 [compat]
 FixedPointNumbers = "0.8"
+GLPK = "0.14"
 LightGraphs = "1.3"
 julia = "1"