diff --git a/conf/buildout.cfg b/conf/buildout.cfg
index eefe010b96..9b7a1e647e 100644
--- a/conf/buildout.cfg
+++ b/conf/buildout.cfg
@@ -129,7 +129,7 @@ xlrd = 0.9.3
 landez = 2.5.0
 bpython = 0.14
 cffi = 1.11.2
-WeasyPrint = 50
+WeasyPrint = 49
 django-weasyprint = 0.5.4
 lxml = 4.2.1
 celery = 4.3.0