diff --git a/Project.toml b/Project.toml
index ee5667a..93f92df 100644
--- a/Project.toml
+++ b/Project.toml
@@ -12,6 +12,7 @@ SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 StatsBase = "2913bbd2-ae8a-5f71-8c99-4fb6c76f3a91"
 
 [compat]
+BeliefUpdaters = "0.1"
 POMDPs = "0.7.3, 0.8"
 julia = "1"