diff --git a/test/Project.toml b/test/Project.toml
index ed8fd04..942d9db 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -12,6 +12,7 @@ Aqua = "0.8.9"
 CSV = "0.10"
 DataFrames = "1.5"
 JET = "0.9.12, 0.10, 0.11"
+MixedModelsSmallSample = "0.1"
 SafeTestsets = "0.1"
 Test = "1.10"
 julia = "1.10"