diff --git a/requirements_dev.txt b/requirements_dev.txt
index 491145a..472ab99 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,4 +1,4 @@
-bump2version==0.5.11
+bump2version==1.0.1
 coverage==4.5.4
 cryptography==2.8
 flake8==3.7.8