diff --git a/backend/requirements/default.txt b/backend/requirements/default.txt
index cc13447c8fa..bc567ea35ef 100644
--- a/backend/requirements/default.txt
+++ b/backend/requirements/default.txt
@@ -75,7 +75,7 @@ starlette==0.36.3
 supervisor==4.2.5
 tiktoken==0.4.0
 timeago==1.0.16
-transformers==4.39.2
+transformers==5.5.0
 uvicorn==0.21.1
 zulip==0.8.2
 hubspot-api-client==8.1.0
diff --git a/backend/requirements/model_server.txt b/backend/requirements/model_server.txt
index 4ef8ffa5b6a..080fcfc70b1 100644
--- a/backend/requirements/model_server.txt
+++ b/backend/requirements/model_server.txt
@@ -5,5 +5,5 @@ safetensors==0.4.2
 sentence-transformers==2.6.1
 tensorflow==2.15.0
 torch==2.0.1
-transformers==4.39.2
+transformers==5.5.0
 uvicorn==0.21.1