diff --git a/moody/js/assets/emotions/requirements.txt b/moody/js/assets/emotions/requirements.txt
index 879d6b3..f283b74 100644
--- a/moody/js/assets/emotions/requirements.txt
+++ b/moody/js/assets/emotions/requirements.txt
@@ -8,7 +8,7 @@ html5lib==0.9999999
 Keras==2.1.4
 Markdown==2.6.11
 numpy==1.14.1
-protobuf==3.6.0
+protobuf==3.18.3
 PyYAML==3.13
 scipy==1.1.0
 six==1.11.0