diff --git a/test/Project.toml b/test/Project.toml
index c78c1f7..a66c31a 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -15,5 +15,6 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 CSV = "0.10, 1"
 CategoricalArrays = "0.10"
 DataFrames = "1"
+ReverseDiff = "1"
 Statistics = "1"
 TimerOutputs = "0.5"