diff --git a/cartoonify/requirements_desktop.txt b/cartoonify/requirements_desktop.txt
index d64e314e..e492807d 100644
--- a/cartoonify/requirements_desktop.txt
+++ b/cartoonify/requirements_desktop.txt
@@ -18,7 +18,7 @@ idna==2.6
 jsonlines==1.2.0
 Markdown==2.6.10
 Pillow==5.0.0
-protobuf==3.5.1
+protobuf==3.15.0
 pycparser==2.18
 pyparsing==2.2.0
 pypng==0.0.18