diff --git a/requirements.txt b/requirements.txt
index 68036c6c0..f43ad1deb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,7 +51,7 @@ orjson==3.11.5
 # CRITICAL: ChromaDB 1.3.4 requires onnxruntime>=1.14.1
 # Using Python 3.11 for compatibility (Python 3.12 doesn't have onnxruntime wheels on Linux yet)
 onnxruntime>=1.14.1  # Required by chromadb, compatible with Python 3.11
-chromadb==1.4.1
+chromadb==1.5.5
 sentence-transformers>=2.7.0  # Updated to support newer huggingface_hub
 
 # Security & Rate Limiting