diff --git a/DifferentiationInterfaceTest/test/Project.toml b/DifferentiationInterfaceTest/test/Project.toml
index 2b439cfd4..bda730db8 100644
--- a/DifferentiationInterfaceTest/test/Project.toml
+++ b/DifferentiationInterfaceTest/test/Project.toml
@@ -26,3 +26,4 @@ ExplicitImports = "1.10.1"
 FiniteDiff = "2.27.0"
 SparseConnectivityTracer = "0.5.0,0.6,1"
 SparseMatrixColorings = "0.4.9"
+Zygote = "0.7"