diff --git a/requirements/requirements-gpu.txt b/requirements/requirements-gpu.txt
index 28aca94..676708e 100644
--- a/requirements/requirements-gpu.txt
+++ b/requirements/requirements-gpu.txt
@@ -13,7 +13,7 @@ networkx==2.1
 numpy==1.14.0
 Pillow==6.2.0
 pip-autoremove==0.9.0
-protobuf==3.5.1
+protobuf==3.18.3
 pyparsing==2.2.0
 python-dateutil==2.6.1
 pytz==2017.3
diff --git a/requirements/requirements.txt b/requirements/requirements.txt
index 37614fd..a10e2c4 100644
--- a/requirements/requirements.txt
+++ b/requirements/requirements.txt
@@ -15,7 +15,7 @@ numpy==1.14.0
 Pillow==6.2.0
 pip-autoremove==0.9.0
 pkg-resources==0.0.0
-protobuf==3.5.1
+protobuf==3.18.3
 pyparsing==2.2.0
 python-dateutil==2.6.1
 pytz==2017.3