diff --git a/machine-learning/technical-indicators/requirements.txt b/machine-learning/technical-indicators/requirements.txt
index 5647d5ff..e2e5852b 100644
--- a/machine-learning/technical-indicators/requirements.txt
+++ b/machine-learning/technical-indicators/requirements.txt
@@ -1,4 +1,5 @@
 pandas-datareader
 yfinance
 mpl-finance
-stockstats
\ No newline at end of file
+stockstats
+protobuf>=6.33.5 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file