diff --git a/requirements.txt b/requirements.txt
index e7c003b..798aa86 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ opencv-contrib-python==4.1.1.26
 pathspec==0.6.0
 Pillow==8.3.2
 pluggy==0.13.0
-protobuf==3.10.0
+protobuf==3.15.0
 pycairo==1.18.2
 pycryptodome==3.6.6
 PyGObject==3.34.0