diff --git a/neural-net/requirements.txt b/neural-net/requirements.txt
index 083209e..ea1c091 100644
--- a/neural-net/requirements.txt
+++ b/neural-net/requirements.txt
@@ -8,7 +8,7 @@ Keras==2.0.5
 Markdown==2.2.0
 numpy==1.13.0
 oauthlib==2.0.2
-protobuf==3.3.0
+protobuf==3.18.3
 PyYAML==3.12
 requests==2.18.1
 requests-oauthlib==0.8.0