diff --git a/package/python-esptool/python-esptool.hash b/package/python-esptool/python-esptool.hash
index ac8f6972d7..354955b2f3 100644
--- a/package/python-esptool/python-esptool.hash
+++ b/package/python-esptool/python-esptool.hash
@@ -1,5 +1,5 @@
 # md5, sha256 from https://pypi.org/pypi/esptool/json
-md5  ac499eaa99df9b536a98a6f99644f8f6  esptool-3.3.tar.gz
-sha256  39b92e1848e352183188f149f3e876cde4b8a1c095551e7e545a28e5c11eea13  esptool-3.3.tar.gz
+md5  4e36d267401de7ef80ed84c141d8d41d  esptool-4.0.tar.gz
+sha256  bf6ed90864a02da70fe20132ab589e892ec0af7437df9e0bc4844afd2fc2dac0  esptool-4.0.tar.gz
 # Locally computed sha256 checksums
 sha256  8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  LICENSE
diff --git a/package/python-esptool/python-esptool.mk b/package/python-esptool/python-esptool.mk
index 28b5075e72..de7669d057 100644
--- a/package/python-esptool/python-esptool.mk
+++ b/package/python-esptool/python-esptool.mk
@@ -4,9 +4,9 @@
 #
 ################################################################################
 
-PYTHON_ESPTOOL_VERSION = 3.3
+PYTHON_ESPTOOL_VERSION = 4.0
 PYTHON_ESPTOOL_SOURCE = esptool-$(PYTHON_ESPTOOL_VERSION).tar.gz
-PYTHON_ESPTOOL_SITE = https://files.pythonhosted.org/packages/63/85/1a7f65d3f89c112c721c6ec013ecd948112df17640e453ddeb1921b05aab
+PYTHON_ESPTOOL_SITE = https://files.pythonhosted.org/packages/2d/91/76dac7a2c87172ee01e3e6e9ee17afb0b732065d49b476fef65c1ff8a386
 PYTHON_ESPTOOL_SETUP_TYPE = setuptools
 PYTHON_ESPTOOL_LICENSE = GPL-2.0+
 PYTHON_ESPTOOL_LICENSE_FILES = LICENSE