diff --git a/requirements.txt b/requirements.txt
index 47a1e9d24..10978c2b8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ anora>=0.1.2
 argon2-cffi>=16.1.0		# For the Argon2 password hasher option
 beautifulsoup4>=4.5.0
 bibtexparser>=0.6.2,<1.0	# Version 1.0 doesn't work under python 2.7.  1.0.1 doesn't recognize month names or abbreviations.
-bleach>=2.0.0
+bleach>=2.0.0,!=3.0.0
 coverage>=4.0.1,!=4.0.2
 #cssselect>=0.6.1               # for PyQuery
 decorator>=4.0.4