diff --git a/backend/requirements.txt b/backend/requirements.txt
index 8934c67a7b..2816e8195b 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -59,7 +59,7 @@ weaviate-client==4.20.3
 opensearch-py==3.1.0
 
 transformers==5.5.4
-sentence-transformers==5.2.3
+sentence-transformers==5.4.0
 accelerate==1.13.0
 pyarrow==20.0.0 # fix: pin pyarrow version to 20 for rpi compatibility #15897
 einops==0.8.2 
diff --git a/pyproject.toml b/pyproject.toml
index 3670bf1fb4..c7f14e2c39 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -65,7 +65,7 @@ dependencies = [
     "boto3==1.42.62",
     
     "transformers==5.5.4",
-    "sentence-transformers==5.2.3",
+    "sentence-transformers==5.4.0",
     "accelerate==1.13.0",
     "pyarrow==20.0.0", # fix: pin pyarrow version to 20 for rpi compatibility #15897
     "einops==0.8.2",