diff --git a/lib/backports/__init__.py b/lib/backports/__init__.py
index b09491b2..0d1f7edf 100644
--- a/lib/backports/__init__.py
+++ b/lib/backports/__init__.py
@@ -1,5 +1 @@
-# A Python "namespace package" http://www.python.org/dev/peps/pep-0382/
-# This always goes inside of a namespace package's __init__.py
-from pkgutil import extend_path
-
-__path__ = extend_path(__path__, __name__)  # type: ignore
+__path__ = __import__('pkgutil').extend_path(__path__, __name__)  # type: ignore
diff --git a/lib/backports/functools_lru_cache.py b/lib/backports/functools_lru_cache.py
index 8be4515f..1b83fe99 100644
--- a/lib/backports/functools_lru_cache.py
+++ b/lib/backports/functools_lru_cache.py
@@ -89,7 +89,6 @@ def lru_cache(maxsize=100, typed=False):  # noqa: C901
     # to allow the implementation to change (including a possible C version).
 
     def decorating_function(user_function):
-
         cache = dict()
         stats = [0, 0]  # make statistics updateable non-locally
         HITS, MISSES = 0, 1  # names for the stats fields
diff --git a/requirements.txt b/requirements.txt
index 5f3de400..e8dbb20d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ appdirs==1.4.4
 apscheduler==3.10.1
 arrow==1.2.3
 backports.csv==1.0.7
-backports.functools-lru-cache==1.6.4
+backports.functools-lru-cache==1.6.6
 backports.zoneinfo==0.2.1;python_version<"3.9"
 beautifulsoup4==4.12.2
 bleach==6.0.0