diff --git a/requirements.txt b/requirements.txt
index 65ba0dd..57a160b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ neovim==0.3.1
 numpy==1.16.3
 pbr==5.1.3
 Pillow==6.0.0
-protobuf==3.7.1
+protobuf==3.15.0
 Pygments==2.3.1
 pylint==2.3.1
 pynvim==0.3.2