diff --git a/requirements.txt b/requirements.txt
index 703aad2..c128443 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,6 @@ pillow        >= 9.5
 
 requests      >= 2.28
 biopython     >= 1.81
-PySimpleGUI   >= 4.60
 
 customtkinter >= 0.3
 CTkMessagebox >= 2.5