diff --git a/Project.toml b/Project.toml
index 3e6245f..bdbc151 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "QuantumControl"
 uuid = "8a270532-f23f-47a8-83a9-b33d10cad486"
-authors = ["Michael Goerz <mail@michaelgoerz.net>"]
 version = "0.11.3+dev"
+authors = ["Michael Goerz <mail@michaelgoerz.net>"]
 
 [deps]
 FileIO = "5789e2e9-d7fb-5bc7-8068-2c6fae9b9549"
@@ -25,6 +25,7 @@ QuantumControlFiniteDifferencesExt = "FiniteDifferences"
 QuantumControlZygoteExt = "Zygote"
 
 [compat]
+ChainRulesCore = "1"
 FileIO = "1"
 FiniteDifferences = "0.12"
 IOCapture = "0.2.4, 1"