diff --git a/Project.toml b/Project.toml
index aa5d6240c..7af69213e 100644
--- a/Project.toml
+++ b/Project.toml
@@ -27,7 +27,7 @@ AdvancedMH = "0.6"
 Conda = "1.7"
 Distributions = "0.24, 0.25"
 DocStringExtensions = "0.8, 0.9"
-EnsembleKalmanProcesses = "0.8"
+EnsembleKalmanProcesses = "0.8, 0.9"
 GaussianProcesses = "0.12"
 MCMCChains = "4.14, 5"
 PyCall = "1.93"