diff --git a/src/requirements-gpu.txt b/src/requirements-gpu.txt
index da80471..9a52ba9 100644
--- a/src/requirements-gpu.txt
+++ b/src/requirements-gpu.txt
@@ -64,7 +64,7 @@ pickleshare==0.7.4
 Pillow==5.1.0
 prettytable==0.7.2
 prompt-toolkit==1.0.15
-protobuf==3.6.0
+protobuf==3.15.0
 ptyprocess==0.5.2
 pyasn1==0.4.3
 pycparser==2.18
diff --git a/src/requirements.txt b/src/requirements.txt
index 015ff3f..6aa3a82 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -64,7 +64,7 @@ pickleshare==0.7.4
 Pillow==5.1.0
 prettytable==0.7.2
 prompt-toolkit==1.0.15
-protobuf==3.6.0
+protobuf==3.15.0
 ptyprocess==0.5.2
 pyasn1==0.4.3
 pycparser==2.18
diff --git a/src/requirementssenti.txt b/src/requirementssenti.txt
index ff7f09c..886415a 100644
--- a/src/requirementssenti.txt
+++ b/src/requirementssenti.txt
@@ -65,7 +65,7 @@ pickleshare==0.7.4
 Pillow==5.1.0
 prettytable==0.7.2
 prompt-toolkit==1.0.15
-protobuf==3.6.0
+protobuf==3.15.0
 ptyprocess==0.5.2
 pyasn1==0.4.3
 pycparser==2.18