diff --git a/Cargo.toml b/Cargo.toml
index 1c0a841..13a32c9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,6 +26,7 @@ terrors = "0.3"
 
 [dev-dependencies]
 # Testing
+assert2 = "0.3"
 test-log = "0.2"
 anyhow = "1.0"