diff --git a/test/Project.toml b/test/Project.toml
index e80ce1bdb7..11694dd064 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -39,6 +39,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 TimerOutputs = "a759f4b9-e2f1-59dc-863e-4aeb61b1ea8f"
 
 [compat]
+ADTypes = "1"
 AbstractMCMC = "5"
 AbstractPPL = "0.9, 0.10, 0.11"
 AdvancedMH = "0.6, 0.7, 0.8"