diff --git a/Cargo.toml b/Cargo.toml
index 601b3fb..758f9f5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,5 +6,11 @@ edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[profile.release]
+opt-level = 3
+lto = "fat"
+codegen-units = 1
+panic = "unwind"
+
 [dependencies]
-getrandom = "0.1"
\ No newline at end of file
+getrandom = "0.1"
diff --git a/src/impl.rs b/src/impl.rs
index 38259ec..737ba0e 100644
--- a/src/impl.rs
+++ b/src/impl.rs
@@ -1,5 +1,4 @@
 use super::*;
-use getrandom::*;
 
 pub fn range(start: f64, end: f64, mut repeat: usize) -> Result<(), Error>
 {