diff --git a/test/Project.toml b/test/Project.toml
index cc0476bdf..923a48ea2 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -45,7 +45,7 @@ EnzymeCore = "0.6 - 0.8"
 ForwardDiff = "0.10.12"
 JET = "0.9, 0.10"
 LogDensityProblems = "2"
-MCMCChains = "6.0.4"
+MCMCChains = "6.0.4, 7"
 MacroTools = "0.5.6"
 OrderedCollections = "1"
 ReverseDiff = "1"