diff --git a/Cargo.toml b/Cargo.toml
index 63da070..5a90f4c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,11 @@ edition = "2021"
 debug = true
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[profile.dev]
+debug=2
+
 [dependencies]
 rand="0.8.5"
+hashbrown="0.14"
 finum={ path="../finum" }