diff --git a/requirements.txt b/requirements.txt
index 01abd5b..751a042 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ MarkupSafe==0.23
 maxminddb==1.2.0
 mistune==0.7.3
 # mod-wsgi-httpd==2.4.27.1
-mod-wsgi==4.6.4
+mod-wsgi==4.9.3
 nbconvert==4.2.0
 nbformat==4.1.0
 netaddr==0.7.13