diff --git a/test/Project.toml b/test/Project.toml
index 79e6d129b..3ca8c6ff9 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -46,7 +46,7 @@ EnzymeCore = "0.6 - 0.8"
 ForwardDiff = "0.10.12"
 JET = "0.9"
 LogDensityProblems = "2"
-MCMCChains = "6.0.4"
+MCMCChains = "6.0.4, 7"
 MacroTools = "0.5.6"
 Mooncake = "0.4.95"
 OrderedCollections = "1"