diff --git a/reqs_optional/requirements_optional_langchain.txt b/reqs_optional/requirements_optional_langchain.txt
index 3235587ac..ea50ebb7a 100644
--- a/reqs_optional/requirements_optional_langchain.txt
+++ b/reqs_optional/requirements_optional_langchain.txt
@@ -106,3 +106,4 @@ numpy>=1.22.2 # not directly required, pinned by Snyk to avoid a vulnerability
 setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability
 sympy>=1.12 # not directly required, pinned by Snyk to avoid a vulnerability
 wheel>=0.38.0 # not directly required, pinned by Snyk to avoid a vulnerability
+transformers>=4.37.0 # not directly required, pinned by Snyk to avoid a vulnerability