diff --git a/Project.toml b/Project.toml
index 8bba22e2..0515f25f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -28,8 +28,9 @@ JSON = "~0.18, ~0.19, ~0.20, ~0.21"
 JuMP = "~0.22, ~0.23, 1"
 Juniper = ">= 0.4"
 Memento = "~1.0, ~1.1, ~1.2, ~1.3, ~1.4"
+PolyhedralRelaxations = "~0.3"
 XMLDict = "~0.4"
-ZipFile = "~0.8, ~0.9"
+ZipFile = "~0.8, ~0.9, ~0.10"
 julia = "^1"