diff --git a/Cargo.toml b/Cargo.toml
index 2e8df6a4ebc..7cac3b27e77 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -29,6 +29,10 @@ todo = "warn"
 [lints]
 workspace = true
 
+[profile.dev.package]
+insta.opt-level = 3
+similar.opt-level = 3
+
 [profile.release]
 opt-level = 2