diff --git a/mflix/server/python-fastapi/requirements.in b/mflix/server/python-fastapi/requirements.in
index b1542a4..a9284aa 100644
--- a/mflix/server/python-fastapi/requirements.in
+++ b/mflix/server/python-fastapi/requirements.in
@@ -55,4 +55,10 @@ sentry-sdk~=2.42.0      # For error tracking and performance monitoring
 # Libraries for rich console output and debugging.
 # ------------------------------------------------------------------------------
 rich~=14.2.0            # For rich, formatted terminal output
-rich-toolkit~=0.15.0    # Extensions for the 'rich' library
\ No newline at end of file
+rich-toolkit~=0.15.0    # Extensions for the 'rich' library
+
+# ==============================================================================
+# 8. TRANSITIVE DEPENDENCY CONSTRAINTS
+# Minimum versions for indirect dependencies.
+# ------------------------------------------------------------------------------
+filelock>=3.20.1        # Transitive dep via huggingface-hub
\ No newline at end of file
diff --git a/mflix/server/python-fastapi/requirements.txt b/mflix/server/python-fastapi/requirements.txt
index e2a8635..456da2f 100644
--- a/mflix/server/python-fastapi/requirements.txt
+++ b/mflix/server/python-fastapi/requirements.txt
@@ -52,8 +52,10 @@ fastapi-cli==0.0.14
     # via -r requirements.in
 fastapi-cloud-cli==0.3.1
     # via -r requirements.in
-filelock==3.20.0
-    # via huggingface-hub
+filelock==3.20.1
+    # via
+    #   -r requirements.in
+    #   huggingface-hub
 frozenlist==1.8.0
     # via
     #   aiohttp