diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # telegram_stickerizer
 A short script to reformat images to comply with the sticker requirements of Telegram Messenger (512px on one side, .png)
+REQUIRES IMAGEMAGICK TO FUNCTION
 
 Usage: ./stickerizer image_source_dir destination_image_dir