diff --git a/TrackingNtuples/scripts/mlenv-requirements.txt b/TrackingNtuples/scripts/mlenv-requirements.txt
index fc79e9c..ae1ba58 100644
--- a/TrackingNtuples/scripts/mlenv-requirements.txt
+++ b/TrackingNtuples/scripts/mlenv-requirements.txt
@@ -57,7 +57,7 @@ pickleshare==0.7.5
 Pillow==5.4.1
 prometheus-client==0.6.0
 prompt-toolkit==2.0.9
-protobuf==3.7.0
+protobuf==3.15.0
 ptyprocess==0.6.0
 Pygments==2.3.1
 pyparsing==2.3.1
diff --git a/TrackingNtuples/scripts/venv-requirements.txt b/TrackingNtuples/scripts/venv-requirements.txt
index 2cb1324..4890487 100644
--- a/TrackingNtuples/scripts/venv-requirements.txt
+++ b/TrackingNtuples/scripts/venv-requirements.txt
@@ -56,7 +56,7 @@ pexpect==4.6.0
 pickleshare==0.7.5
 prometheus-client==0.4.2
 prompt-toolkit==1.0.15
-protobuf==3.6.1
+protobuf==3.15.0
 ptyprocess==0.6.0
 Pygments==2.3.0
 pyparsing==2.3.0