diff --git a/libp2p/utils/address_validation.py b/libp2p/utils/address_validation.py
index 189f00cc..c0da78a6 100644
--- a/libp2p/utils/address_validation.py
+++ b/libp2p/utils/address_validation.py
@@ -147,4 +147,4 @@ __all__ = [
     "get_available_interfaces",
     "get_optimal_binding_address",
     "expand_wildcard_address",
-]
\ No newline at end of file
+]
diff --git a/newsfragments/811.internal.rst b/newsfragments/811.internal.rst
index 8d86c55d..59804430 100644
--- a/newsfragments/811.internal.rst
+++ b/newsfragments/811.internal.rst
@@ -4,4 +4,4 @@ Add Thin Waist address validation utilities and integrate into echo example
 - Implement ``get_available_interfaces()``, ``get_optimal_binding_address()``, and ``expand_wildcard_address()``
 - Update echo example to use dynamic address discovery instead of hardcoded wildcard
 - Add safe fallbacks for environments lacking Thin Waist support
-- Temporarily disable IPv6 support due to libp2p handshake issues (TODO: re-enable when resolved)
\ No newline at end of file
+- Temporarily disable IPv6 support due to libp2p handshake issues (TODO: re-enable when resolved)