diff --git a/pynetdicom/_version.py b/pynetdicom/_version.py
index 0ca2446bf4..8d134eabec 100644
--- a/pynetdicom/_version.py
+++ b/pynetdicom/_version.py
@@ -10,7 +10,7 @@
 import re
 
 
-__version__ = '1.5.6'
+__version__ = '1.5.7'
 
 
 VERSION_PATTERN = r"""