diff --git a/BACKERS.md b/BACKERS.md
index f9a5bea9..71020a9e 100644
--- a/BACKERS.md
+++ b/BACKERS.md
@@ -2,6 +2,14 @@
 
 > You may support this project via ❤️️ [GitHub](https://github.com/sponsors/trekhleb) or ❤️️ [Patreon](https://www.patreon.com/trekhleb).  
 
+## `O(2ⁿ)` Backers
+
+⏳
+
+## `O(n²)` Backers
+
+⏳
+
 ## `O(n×log(n))` Backers
 
 <ul>