diff --git a/Project.toml b/Project.toml
index 33d0ba3542..49a3cf1744 100644
--- a/Project.toml
+++ b/Project.toml
@@ -33,6 +33,7 @@ ConsoleProgressMonitor = "0.1"
 DataInterpolations = "3.3"
 DiffEqBase = "6.41"
 DiffEqSensitivity = "6.19"
+DiffResults = "1.0"
 Distributions = "0.23, 0.24"
 DistributionsAD = "0.6"
 Flux = "0.11.0"