diff --git a/Project.toml b/Project.toml
index d8d78d2..ffaf47c 100644
--- a/Project.toml
+++ b/Project.toml
@@ -42,6 +42,7 @@ IntervalSets = "0.5, 0.6, 0.7"
 JSON = "0.21"
 Nettle = "0.5, 1"
 POMDPModels = "0.4"
+POMDPTools = "1"
 POMDPs = "0.9, 1"
 Parameters = "0.12"
 ProgressMeter = "1.4"