diff --git a/requirements.txt b/requirements.txt
index b5ee15c..f5ef356 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-b2==0.0.5
+b2==3.2.1
 backports-abc==0.5
 backports.shutil-get-terminal-size==1.0.0
 backports.weakref==1.0rc1