diff --git a/Fundamentals-of-Deep-Learning-Book/archive/requirements.txt b/Fundamentals-of-Deep-Learning-Book/archive/requirements.txt
index a74ed7a..33682b7 100644
--- a/Fundamentals-of-Deep-Learning-Book/archive/requirements.txt
+++ b/Fundamentals-of-Deep-Learning-Book/archive/requirements.txt
@@ -17,7 +17,7 @@ pexpect==4.2.1
 pickleshare==0.7.4
 Pillow==4.2.1
 prompt-toolkit==1.0.15
-protobuf==3.4.0
+protobuf==4.25.8
 ptyprocess==0.5.2
 Pygments==2.2.0
 pyparsing==2.2.0
@@ -30,3 +30,4 @@ tensorflow-tensorboard==0.1.4
 traitlets==4.3.2
 wcwidth==0.1.7
 Werkzeug==0.12.2
+urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability