diff -ur comms/py-esptool-2.5.1/Makefile comms/py-esptool/Makefile
--- comms/py-esptool-2.5.1/Makefile	2021-07-07 16:07:05.879711000 +0200
+++ comms/py-esptool/Makefile	2021-10-17 22:35:30.952365000 +0200
@@ -1,7 +1,6 @@
 PORTNAME=	esptool
 DISTVERSIONPREFIX=	v
-DISTVERSION=	2.5.1
-PORTREVISION=	2
+DISTVERSION=	3.1
 CATEGORIES=	comms python
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
@@ -11,11 +10,19 @@
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}wheel>0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pyserial>=3.0:comms/py-pyserial@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pyaes>0:security/py-pyaes@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}ecdsa>0:security/py-ecdsa@${PY_FLAVOR}
-TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pytest>0:devel/py-pytest@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}pyelftools>0:devel/py-pyelftools@${PY_FLAVOR}
+		${PYTHON_PKGNAMEPREFIX}ecdsa>0:security/py-ecdsa@${PY_FLAVOR}\
+		${PYTHON_PKGNAMEPREFIX}pyelftools>0:devel/py-pyelftools@${PY_FLAVOR}\
+		${PYTHON_PKGNAMEPREFIX}flake8>3.2.0:devel/py-flake8@${PY_FLAVOR}\
+		${PYTHON_PKGNAMEPREFIX}flake8-import-order>0:devel/py-flake8-import-order@${PY_FLAVOR}\
+		${PYTHON_PKGNAMEPREFIX}coverage>0:devel/py-coverage@${PY_FLAVOR}\
+		${PYTHON_PKGNAMEPREFIX}bitstring>=3.1.6:devel/py-bitstring@${PY_FLAVOR}\
+		${PYTHON_PKGNAMEPREFIX}cryptography>=2.1.4:security/py-cryptography@${PY_FLAVOR}\
+		${PYTHON_PKGNAMEPREFIX}ecdsa>=0.16.0:security/py-ecdsa@${PY_FLAVOR}\
+		${PYTHON_PKGNAMEPREFIX}reedsolo>=1.5.3,<=1.5.4:devel/py-reedsolo@${PY_FLAVOR}
+TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pytest>0:devel/py-pytest@${PY_FLAVOR}
 
 USES=		python:3.6+
 USE_GITHUB=	yes
@@ -25,8 +32,8 @@
 NO_ARCH=	yes
 
 ESPTOOL_BAUDRATE?=	115200
-ESPTOOL_CHIP?=		esp8266
-ESPTOOL_SERIALPORT?=	/dev/ttyU0
+ESPTOOL_CHIP?=		esp32c3
+ESPTOOL_SERIALPORT?=	/dev/cuaU0
 
 do-test:
 	@cd ${TEST_WRKSRC} && ${SETENV} ${TEST_ENV} ${PYTHON_CMD} -m pytest \
diff -ur comms/py-esptool-2.5.1/distinfo comms/py-esptool/distinfo
--- comms/py-esptool-2.5.1/distinfo	2021-07-07 16:07:05.879793000 +0200
+++ comms/py-esptool/distinfo	2021-10-17 21:45:34.163499000 +0200
@@ -1,3 +1,3 @@
-TIMESTAMP = 1545284851
-SHA256 (espressif-esptool-v2.5.1_GH0.tar.gz) = 6730b69d8ba09ff09f845873eaeef352bd18a4ee24b31b0898fd8fc5f178c037
-SIZE (espressif-esptool-v2.5.1_GH0.tar.gz) = 4042666
+TIMESTAMP = 1634499934
+SHA256 (espressif-esptool-v3.1_GH0.tar.gz) = 5edc768a63df4d73bdeba534146f6b3e41fbbe3c25f08be627733fc38535a976
+SIZE (espressif-esptool-v3.1_GH0.tar.gz) = 6897273