diff --git a/test/Project.toml b/test/Project.toml
index ed8ae7971..4a7654c03 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -22,7 +22,7 @@ Tracker = "9f7883ad-71c0-57eb-9f7f-b5c9e6d3789c"
 Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 
 [compat]
-AbstractMCMC = "2.1, 3.0, 4"
+AbstractMCMC = "2.1, 3.0, 4, 5"
 AbstractPPL = "0.6"
 Bijectors = "0.13"
 Compat = "4.3.0"