diff --git a/requirements.in b/requirements.in
index a4b75fd5..6f772442 100644
--- a/requirements.in
+++ b/requirements.in
@@ -16,7 +16,7 @@ google-api-python-client==1.9.0
 gunicorn
 oauth2client
 Pillow==8.3.2
-protobuf==3.12.2
+protobuf==3.18.3
 psycopg2-binary
 requests
 whitenoise
diff --git a/requirements.txt b/requirements.txt
index a5b586c5..78dbb075 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -89,7 +89,7 @@ oauthlib==3.1.0
     # via requests-oauthlib
 pillow==8.3.2
     # via -r requirements.in
-protobuf==3.12.2
+protobuf==3.18.3
     # via
     #   -r requirements.in
     #   google-api-core
@@ -140,7 +140,6 @@ six==1.14.0
     #   google-api-python-client
     #   google-auth
     #   oauth2client
-    #   protobuf
     #   python-dateutil
 sqlparse==0.3.1
     # via