diff --git a/requirements.txt b/requirements.txt
index d4493eb..be3ec0d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ Keras-Preprocessing==1.0.1
 Markdown==2.6.11
 nltk==3.6.6
 numpy==1.22.0
-protobuf==3.15.0
+protobuf==3.18.3
 PyYAML==5.4
 scipy==1.1.0
 six==1.11.0