diff --git a/requirements.txt b/requirements.txt
index 5e2dc78..8f2efba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ astor==0.8.1
 attrs==19.3.0
 autoflake==1.3.1
 autopep8==1.5.2
-backcall==0.1.0
+backcall==0.2.0
 base58==2.0.0
 black==19.10b0
 bleach==3.1.5