diff --git a/Cargo.toml b/Cargo.toml
index 048598f..f1ecfca 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,8 +22,12 @@ simple_asn1 = "^0.2.0"
 [dev-dependencies]
 quickcheck = "^0.7.2"
 
+[profile.dev]
+opt-level = 1
+overflow-checks = false
+
 [profile.test]
 opt-level = 2
 debug = true
 debug-assertions = true
-
+overflow-checks = false