diff --git a/requirements.txt b/requirements.txt
index 4d62488..b3af231 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ pathtools==0.1.2
 Pillow==8.3.2
 pkg-resources==0.0.0
 promise==2.3
-protobuf==3.17.3
+protobuf==3.18.3
 psutil==5.8.0
 pydensecrf @ git+https://github.com/lucasb-eyer/pydensecrf.git@0d53acbcf5123d4c88040fe68fbb9805fc5b2fb9
 pyparsing==2.4.7
diff --git a/requirements_pau.txt b/requirements_pau.txt
index 3a7bd23..3398014 100644
--- a/requirements_pau.txt
+++ b/requirements_pau.txt
@@ -101,7 +101,7 @@ pickleshare==0.7.5
 prometheus-client==0.9.0
 promise==2.3
 prompt-toolkit==3.0.16
-protobuf==3.15.3
+protobuf==3.18.3
 psutil==5.8.0
 ptyprocess==0.7.0
 pyasn1==0.4.8