From b9b393672e4c7f18b0f84d3baeed14a0ef7a9515 Mon Sep 17 00:00:00 2001
From: Mario Rugiero <mrugiero@gmail.com>
Date: Fri, 15 Mar 2024 17:14:13 -0300
Subject: [PATCH] Add a warning

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 87bedc0f6d..fa7a7d6ffe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
     * Required updating `lambdaworks-math` to version 0.5.0 for missing features
     * Required adding methods `from_raw` and `raw` to `cairo-felt` for efficient conversions
     * BREAKING: `Memory::get_value` will now always return `Cow::Owned` variants, code that relied on `Cow::Borrowed` may break
+    * BREAKING: legacy `BigUint`-based `cairo-felt` suffers massive slowdowns due to extra copying, these changes are meant to optimize usage with the `lambdaworks` backend instead
 
 #### [0.9.2] - 2024-01-3