diff --git a/config.toml b/config.toml
index 0b9a14c..2ebce74 100644
--- a/config.toml
+++ b/config.toml
@@ -128,6 +128,14 @@ version = "1.7.0.3"
 scope = "test"
 category = "test"
 
+[dependencies.assertJ]
+groupId = "org.assertj"
+artifactId = "assertj-core"
+version = "3.16.1"
+scope = "test"
+category = "test"
+default = true
+
 [dependencies.Kodein-DI]
 groupId = "org.kodein.di"
 artifactId = "kodein-di-jvm"