diff --git a/api/requirements.txt b/api/requirements.txt
index f5059c4..d2b1be8 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -29,7 +29,7 @@ numpy==1.18.2             # via -r requirements.in, h5py, keras-preprocessing, o
 oauthlib==3.1.0           # via requests-oauthlib
 opencv-python-headless==4.2.0.32  # via -r requirements.in
 opt-einsum==3.2.0         # via tensorflow
-protobuf==3.11.3          # via tensorboard, tensorflow
+protobuf==3.18.3          # via tensorboard, tensorflow
 pyasn1-modules==0.2.8     # via google-auth
 pyasn1==0.4.8             # via pyasn1-modules, rsa
 requests-oauthlib==1.3.0  # via google-auth-oauthlib