diff --git a/requirements.txt b/requirements.txt
index 9e3bb0140c38aa7d91a179b4facaf329810cf049..528f9695e724308a9c2881f0b3e270d83d0c1db8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 duplicity==1.2.2
-b2sdk==1.19.0
+b2sdk==1.21.0
 paramiko==2.12.0