diff --git a/REQUIREMENTS b/REQUIREMENTS
index a3ca744..140a461 100644
--- a/REQUIREMENTS
+++ b/REQUIREMENTS
@@ -118,6 +118,7 @@ pyparsing==2.4.7 ; python_version >= '2.6' and python_version not in '3.0, 3.1,
 pypdns==1.5.2
 pypssl==2.2
 pyrsistent==0.19.3 ; python_version >= '3.7'
+pysafebrowsing==0.1.2
 pytesseract==0.3.10
 python-baseconv==1.2.2
 python-dateutil==2.8.2 ; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'