diff --git a/examples/notebooks/tf_2_2/requirements.txt b/examples/notebooks/tf_2_2/requirements.txt
index bd0cf5f..00343d0 100644
--- a/examples/notebooks/tf_2_2/requirements.txt
+++ b/examples/notebooks/tf_2_2/requirements.txt
@@ -49,7 +49,7 @@ pickleshare==0.7.5
 Pillow==8.1.1
 prometheus-client==0.8.0
 prompt-toolkit==3.0.5
-protobuf==3.12.2
+protobuf==3.18.3
 ptyprocess==0.6.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8