diff --git a/summarizer/requirements.txt b/summarizer/requirements.txt
index 7369081..cbd9223 100644
--- a/summarizer/requirements.txt
+++ b/summarizer/requirements.txt
@@ -12,7 +12,7 @@ ortools==7.5.7466
 pandas==1.0.3
 tabulate==0.8.7
 Pillow==7.1.1
-protobuf==3.11.3
+protobuf==3.18.3
 pylint==2.4.4
 six==1.14.0
 tables==3.6.1