diff --git a/pyproject.toml b/pyproject.toml
index 024e4e72..826cffcd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -71,6 +71,7 @@ dependencies = [
     "boto3>=1.35.0",
     "pymilvus>=2.6.4",
     "pgvector>=0.4.1",
+    "botocore>=1.42.39",
 ]
 keywords = [
     "bot",
diff --git a/src/langbot/pkg/storage/mgr.py b/src/langbot/pkg/storage/mgr.py
index 1c5dec90..08f7c8d7 100644
--- a/src/langbot/pkg/storage/mgr.py
+++ b/src/langbot/pkg/storage/mgr.py
@@ -22,6 +22,7 @@ class StorageMgr:
 
         if storage_type == 's3':
             from .providers import s3storage
+
             self.storage_provider = s3storage.S3StorageProvider(self.ap)
             self.ap.logger.info('Initialized S3 storage backend.')
         else:
diff --git a/uv.lock b/uv.lock
index 630ce882..ed4c88b8 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1813,6 +1813,7 @@ dependencies = [
     { name = "asyncpg" },
     { name = "beautifulsoup4" },
     { name = "boto3" },
+    { name = "botocore" },
     { name = "certifi" },
     { name = "chardet" },
     { name = "chromadb" },
@@ -1891,6 +1892,7 @@ requires-dist = [
     { name = "asyncpg", specifier = ">=0.30.0" },
     { name = "beautifulsoup4", specifier = ">=4.12.3" },
     { name = "boto3", specifier = ">=1.35.0" },
+    { name = "botocore", specifier = ">=1.42.39" },
     { name = "certifi", specifier = ">=2025.4.26" },
     { name = "chardet", specifier = ">=5.2.0" },
     { name = "chromadb", specifier = ">=0.4.24" },