diff --git a/Cargo.toml b/Cargo.toml
index 5c24e963..5a71b928 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -70,3 +70,5 @@ name = "oxipng"
 path = "src/lib.rs"
 [profile.dev]
 opt-level = 2
+[profile.release]
+lto = true