diff --git a/chatter/requirements.txt b/chatter/requirements.txt
index 88cd662..490c2a1 100644
--- a/chatter/requirements.txt
+++ b/chatter/requirements.txt
@@ -3,7 +3,7 @@ mathparse>=0.1,<0.2
 nltk>=3.2,<4.0
 pint>=0.8.1
 python-dateutil>=2.8,<2.9
-pyyaml>=5.3,<5.4
+# pyyaml>=5.3,<5.4
 sqlalchemy>=1.3,<1.4
 pytz
 spacy>=2.3,<2.4