diff --git a/requirements.txt b/requirements.txt
index 0e45f67..08b0f77 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 astroid==2.5.1
-backports.functools-lru-cache==1.6.1
+backports.functools-lru-cache==1.6.4
 configparser==5.0.2
 enum34==1.1.10
 futures==3.3.0