diff --git a/colab_requirements.txt b/colab_requirements.txt
index ad064135a1..a5e50b3a5b 100644
--- a/colab_requirements.txt
+++ b/colab_requirements.txt
@@ -1,2 +1,4 @@
 matplotlib
 jupyter
+jupyter-server>=2.14.1 # not directly required, pinned by Snyk to avoid a vulnerability
+tornado>=6.4.1 # not directly required, pinned by Snyk to avoid a vulnerability