diff --git a/Cargo.toml b/Cargo.toml
index f4ac67e..a6c52cf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,5 +4,9 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-rug = "1.30.0"
 thiserror = "2.0.18"
+
+[dependencies.rug]
+version = "1.30"
+default-features = false
+features = ["std", "float"]