diff --git a/requirements.txt b/requirements.txt
index 96137a5..161d13c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ cryptography==2.6.1
 cycler==0.10.0
 Cython==0.29.7
 decorator==4.4.0
-filelock==3.0.10
+filelock==3.20.1
 gast==0.2.2
 glob2==0.6
 grpcio==1.20.1