diff --git a/esptool.py b/esptool.py
index a35265e69..01176aff2 100755
--- a/esptool.py
+++ b/esptool.py
@@ -68,7 +68,7 @@
         raise
 
 
-__version__ = "3.1-dev"
+__version__ = "3.1"
 
 MAX_UINT32 = 0xffffffff
 MAX_UINT24 = 0xffffff