diff --git a/reqs_optional/requirements_optional_langchain.txt b/reqs_optional/requirements_optional_langchain.txt
index 99832dd72..d37990d75 100644
--- a/reqs_optional/requirements_optional_langchain.txt
+++ b/reqs_optional/requirements_optional_langchain.txt
@@ -103,3 +103,4 @@ 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>=4.38.0 # not directly required, pinned by Snyk to avoid a vulnerability