diff --git a/Cargo.toml b/Cargo.toml
index 6b29b18127..4c5ed0f309 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -203,6 +203,9 @@ core-graphics = { git = "https://github.com/servo/core-foundation-rs", rev = "07
 [profile.dev]
 split-debuginfo = "unpacked"
 
+[profile.dev.package.taffy]
+opt-level = 3
+
 [profile.release]
 debug = true
 lto = "thin"