diff --git a/requirements.txt b/requirements.txt
index b1c5be9..520eef6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ mccabe==0.6.1
 numpy==1.19.1
 ortools==7.7.7810
 Pillow==7.2.0
-protobuf==3.12.4
+protobuf==3.18.3
 pylint==2.5.3
 pymongo==3.11.0
 pyparsing==2.4.7
diff --git a/server/requirements.txt b/server/requirements.txt
index 526497b..6430f8c 100644
--- a/server/requirements.txt
+++ b/server/requirements.txt
@@ -25,7 +25,7 @@ mccabe==0.6.1
 numpy==1.19.1
 ortools==7.7.7810
 Pillow==7.2.0
-protobuf==3.12.4
+protobuf==3.18.3
 pylint==2.5.3
 pymongo==3.11.0
 pyparsing==2.4.7