diff --git a/README.md b/README.md
index b640fb3..d31624d 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,7 @@ You must use rust nightly and have to install some compile-time dependencies.
 
 For alpine the dependencies are (may be different for other distributions):
 ```
-tesseract-ocr tesseract-ocr-dev leptonica-dev clang clang-libs llvm-dev leptonica
+tesseract-ocr tesseract-ocr-dev leptonica-dev clang clang-libs llvm-dev leptonica unpaper ocrmypdf
 ```
 Then run:
 ```sh