diff --git a/esptool/__init__.py b/esptool/__init__.py
index 88a021813..24272f200 100644
--- a/esptool/__init__.py
+++ b/esptool/__init__.py
@@ -28,7 +28,7 @@
     "write_mem",
 ]
 
-__version__ = "4.6-dev"
+__version__ = "4.5.1"
 
 import argparse
 import inspect