diff --git a/img-compression/requirements.txt b/img-compression/requirements.txt
index a4b2aca..fc911a5 100644
--- a/img-compression/requirements.txt
+++ b/img-compression/requirements.txt
@@ -48,7 +48,7 @@ pickleshare==0.7.5
 Pillow==6.2.1
 prometheus-client==0.7.1
 prompt-toolkit==2.0.10
-protobuf==3.11.1
+protobuf==3.18.3
 ptyprocess==0.6.0
 Pygments==2.5.2
 pyparsing==2.4.5