diff --git a/codes/requirements.txt b/codes/requirements.txt
index cda86fca..11b607e7 100644
--- a/codes/requirements.txt
+++ b/codes/requirements.txt
@@ -33,6 +33,7 @@ audio2numpy
 # For text stuff
 transformers
 tokenizers
+jiwer  # calculating WER
 
 # lucidrains stuff
 vector_quantize_pytorch