diff --git a/Cargo.toml b/Cargo.toml
index 5ca8954..374adf5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,6 +5,10 @@ name = "atcoder-rust-base"
 version = "0.1.0"
 edition = "2018"
 
+[profile.release]
+codegen-units = 1
+incremental = false
+
 [workspace]
 exclude = ["./tools"]