diff --git a/README.md b/README.md
index ed3dd5d..0b96de8 100644
--- a/README.md
+++ b/README.md
@@ -343,7 +343,9 @@ make && make install
 cmake --build .
 ```
 
-## **Patched pysound file wrapper**
+## **Patched pysoundfile wrapper**
+
+Install pysoundfile `pip install soundfile`
 
 ```python3
 import utils.soundfile_opus as sf
@@ -572,4 +574,4 @@ CC-BY-NC and commercial usage available after agreement with dataset authors.
 ## **Russian**
 
 - https://habr.com/ru/post/494006/
-- https://habr.com/ru/post/474462/
\ No newline at end of file
+- https://habr.com/ru/post/474462/