diff --git a/deeplearning/requirements.txt b/deeplearning/requirements.txt
index 2abc5e6..88b2a2a 100644
--- a/deeplearning/requirements.txt
+++ b/deeplearning/requirements.txt
@@ -7,7 +7,7 @@ kiwisolver==1.0.1
 Markdown==3.0
 matplotlib==3.0.0
 numpy==1.14.5
-protobuf==3.6.1
+protobuf==3.15.0
 pyparsing==2.2.1
 python-dateutil==2.7.3
 scikit-learn==0.19.2