diff --git a/Project.toml b/Project.toml
index 4f4a81c..7de266e 100644
--- a/Project.toml
+++ b/Project.toml
@@ -18,7 +18,7 @@ GLPK = "1"
 JuMP = "1"
 MathOptInterface = "1"
 POMDPLinter = "0.1"
-POMDPTools = "0.1"
+POMDPTools = "0.1, 1"
 POMDPs = "0.9, 1"
 julia = "1.6"