diff --git a/Project.toml b/Project.toml
index 0a5dfe7..e1694bf 100644
--- a/Project.toml
+++ b/Project.toml
@@ -25,12 +25,12 @@ IterTools = "1"
 POMDPTools = "0.1, 1"
 POMDPs = "0.9, 1"
 Parameters = "0.12"
-ParticleFilters = "0.5"
+ParticleFilters = "0.5, 0.6"
 SpecialFunctions = "1, 2"
+StableRNGs = "1"
 StaticArrays = "0.12, 1"
 StatsBase = "0.34"
 TikzPictures = "3"
-StableRNGs = "1"
 julia = "1"
 
 [extras]