diff --git a/requirements.txt b/requirements.txt
index f400b19..c931f8b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ numpy==1.17.3
 pandas==0.25.2
 Pillow==6.2.1
 plyfile==0.7.1
-protobuf==3.10.0
+protobuf==3.15.0
 pygobject==3.26.1
 pygraphviz==1.5
 pyparsing==2.4.2