diff --git a/docs/examples/fork-process-model/flask-gunicorn/requirements.txt b/docs/examples/fork-process-model/flask-gunicorn/requirements.txt
index e91747d59ef..86b654a95dc 100644
--- a/docs/examples/fork-process-model/flask-gunicorn/requirements.txt
+++ b/docs/examples/fork-process-model/flask-gunicorn/requirements.txt
@@ -12,7 +12,7 @@ opentelemetry-instrumentation==0.18b0
 opentelemetry-instrumentation-flask==0.18b1
 opentelemetry-instrumentation-wsgi==0.18b1
 opentelemetry-sdk==0.18b0
-protobuf==3.15.0
+protobuf==3.18.3
 six==1.15.0
 thrift==0.13.0
 uWSGI==2.0.19.1
diff --git a/docs/examples/fork-process-model/flask-uwsgi/requirements.txt b/docs/examples/fork-process-model/flask-uwsgi/requirements.txt
index e91747d59ef..86b654a95dc 100644
--- a/docs/examples/fork-process-model/flask-uwsgi/requirements.txt
+++ b/docs/examples/fork-process-model/flask-uwsgi/requirements.txt
@@ -12,7 +12,7 @@ opentelemetry-instrumentation==0.18b0
 opentelemetry-instrumentation-flask==0.18b1
 opentelemetry-instrumentation-wsgi==0.18b1
 opentelemetry-sdk==0.18b0
-protobuf==3.15.0
+protobuf==3.18.3
 six==1.15.0
 thrift==0.13.0
 uWSGI==2.0.19.1