diff --git a/Project.toml b/Project.toml
index 8486df7..ac6a8b5 100644
--- a/Project.toml
+++ b/Project.toml
@@ -41,7 +41,7 @@ InferenceObjectsNetCDF = "0.3"
 JSON3 = "1"
 KrylovKit = "0.6"
 LogDensityProblems = "2"
-MCMCDiagnosticTools = "0.2.6"
+MCMCDiagnosticTools = "0.2.6, 0.3"
 Optim = "1"
 OptimizationNLopt = "0.1"
 Pathfinder = "0.8"