diff --git a/requirements.txt b/requirements.txt
index 7d9864d..d0895cb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,6 +27,7 @@ numpy
 googleapis-common-protos==1.52.0
 grpcio
 pdfminer
+w3m
 #
 ###### Requirements with Version Specifiers ######
 #   See https://www.python.org/dev/peps/pep-0440/#version-specifiers