diff --git a/package/python-esptool/python-esptool.hash b/package/python-esptool/python-esptool.hash
index 4f19fbde41..7e523a7027 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  60bf3a49a794ff5627552f642f28ea3d  esptool-4.1.tar.gz
-sha256  51a41655187780cb802a5827fab68a3db0d6206330560459c55fcf0e222f277f  esptool-4.1.tar.gz
+md5  973b63eac1391d3491846d8676c783e7  esptool-4.3.tar.gz
+sha256  03d00312eef258baf83faefd0b912b2251dd0440242da9dcb1b18fe75ed614c3  esptool-4.3.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 51bc563c5c..3f33fd7865 100644
--- a/package/python-esptool/python-esptool.mk
+++ b/package/python-esptool/python-esptool.mk
@@ -4,9 +4,9 @@
 #
 ################################################################################
 
-PYTHON_ESPTOOL_VERSION = 4.1
+PYTHON_ESPTOOL_VERSION = 4.3
 PYTHON_ESPTOOL_SOURCE = esptool-$(PYTHON_ESPTOOL_VERSION).tar.gz
-PYTHON_ESPTOOL_SITE = https://files.pythonhosted.org/packages/bb/d5/9d000803520b68fd9f6447cd7c15352a79984196f57f0519839b0f80fb8f
+PYTHON_ESPTOOL_SITE = https://files.pythonhosted.org/packages/5b/d7/0dae311a94a490d7b7af2f4fab079b34f6244c6129017997bc994f7b360b
 PYTHON_ESPTOOL_SETUP_TYPE = setuptools
 PYTHON_ESPTOOL_LICENSE = GPL-2.0+
 PYTHON_ESPTOOL_LICENSE_FILES = LICENSE