diff --git a/optional-requirements.txt b/optional-requirements.txt
index 7a2ad451..cf743dbb 100644
--- a/optional-requirements.txt
+++ b/optional-requirements.txt
@@ -12,4 +12,4 @@ rsa==3.4.2
 six==1.10.0
 uritemplate==3.0.0
 goodreads>=0.3.2
-#python-Levenshtein>=0.12.0
+python-Levenshtein>=0.12.0