diff --git a/go.mod b/go.mod
index 265093440..c9b384fdb 100644
--- a/go.mod
+++ b/go.mod
@@ -34,7 +34,6 @@ require (
 	github.com/grandcat/zeroconf v1.0.0
 	github.com/gregdel/pushover v1.1.0
 	github.com/grid-x/modbus v0.0.0-20210714071042-7af2b65ec03b
-	github.com/grid-x/serial v0.0.0-20211107191517-583c7356b3aa // indirect
 	github.com/hashicorp/go-version v1.3.0
 	github.com/imdario/mergo v0.3.12
 	github.com/influxdata/influxdb-client-go/v2 v2.4.0
@@ -75,7 +74,7 @@ require (
 	github.com/spf13/viper v1.8.1
 	github.com/thoas/go-funk v0.9.0
 	github.com/tv42/httpunix v0.0.0-20191220191345-2ba4b9c3382c
-	github.com/volkszaehler/mbmd v0.0.0-20210808132733-8235dc7d1327
+	github.com/volkszaehler/mbmd v0.0.0-20211108155358-6a45861346c4
 	gitlab.com/bboehmke/sunny v0.15.1-0.20211022160056-2fba1c86ade6
 	golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97 // indirect
 	golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d
diff --git a/go.sum b/go.sum
index ea91201f9..2ea2e5836 100644
--- a/go.sum
+++ b/go.sum
@@ -58,8 +58,8 @@ github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRF
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/alvaroloes/enumer v1.1.2 h1:5khqHB33TZy1GWCO/lZwcroBFh7u+0j40T83VUbfAMY=
 github.com/alvaroloes/enumer v1.1.2/go.mod h1:FxrjvuXoDAx9isTJrv4c+T410zFi0DtXIT0m65DJ+Wo=
-github.com/andig/gosunspec v0.0.0-20210511114617-aa30cf9b7a3f h1:X0eQydQuoC/R1ALXgDs9v+1UKWlgGbuMg+h8flc2BJk=
-github.com/andig/gosunspec v0.0.0-20210511114617-aa30cf9b7a3f/go.mod h1:YkshK8WMzYn1iXAZzHUO75gIqhMSan2ctgBVtBkRIyA=
+github.com/andig/gosunspec v0.0.0-20211108155140-af2e73b86e71 h1:tnjVNZjuz+CK6fdc7ohJpMHjcEGFI5APp0l5T5Ocr/Y=
+github.com/andig/gosunspec v0.0.0-20211108155140-af2e73b86e71/go.mod h1:c6P6szcR+ROkqZruOR4f6qbDKFjZX6OitPpj+yJ/r8k=
 github.com/andybalholm/cascadia v1.2.0 h1:vuRCkM5Ozh/BfmsaTm26kbjm0mIOM3yS5Ek/F5h18aE=
 github.com/andybalholm/cascadia v1.2.0/go.mod h1:YCyR8vOZT9aZ1CHEd8ap0gMVm2aFgxBp0T0eFw1RUQY=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
@@ -211,10 +211,6 @@ github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/me
 github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
 github.com/go-telegram-bot-api/telegram-bot-api/v5 v5.0.2-0.20210820200834-309d612d7095 h1:oIT1xkRYsax2LkiKiq2Z6SvgAYEdEx4gqMmDaDNaUrg=
 github.com/go-telegram-bot-api/telegram-bot-api/v5 v5.0.2-0.20210820200834-309d612d7095/go.mod h1:5+h9c5l1Z/+Pi+5boa1Fmr4Q+FImsXYnifor92ljaVs=
-github.com/goburrow/modbus v0.1.0 h1:DejRZY73nEM6+bt5JSP6IsFolJ9dVcqxsYbpLbeW/ro=
-github.com/goburrow/modbus v0.1.0/go.mod h1:Kx552D5rLIS8E7TyUwQ/UdHEqvX5T8tyiGBTlzMcZBg=
-github.com/goburrow/serial v0.1.0 h1:v2T1SQa/dlUqQiYIT8+Cu7YolfqAi3K96UmhwYyuSrA=
-github.com/goburrow/serial v0.1.0/go.mod h1:sAiqG0nRVswsm1C97xsttiYCzSLBmUZ/VSlVLZJ8haA=
 github.com/gobwas/httphead v0.0.0-20180130184737-2c6c146eadee h1:s+21KNqlpePfkah2I+gwHF8xmJWRjooY+5248k6m4A0=
 github.com/gobwas/httphead v0.0.0-20180130184737-2c6c146eadee/go.mod h1:L0fX3K22YWvt/FAX9NnzrNzcI4wNYi9Yku4O0LKYflo=
 github.com/gobwas/pool v0.2.0 h1:QEmUOlnSjWtnpRGHF3SauEiOsy82Cup83Vf2LcMlnc8=
@@ -664,8 +660,8 @@ github.com/vmihailenco/msgpack/v5 v5.3.4 h1:qMKAwOV+meBw2Y8k9cVwAy7qErtYCwBzZ2el
 github.com/vmihailenco/msgpack/v5 v5.3.4/go.mod h1:7xyJ9e+0+9SaZT0Wt1RGleJXzli6Q/V5KbhBonMG9jc=
 github.com/vmihailenco/tagparser/v2 v2.0.0 h1:y09buUbR+b5aycVFQs/g70pqKVZNBmxwAhO7/IwNM9g=
 github.com/vmihailenco/tagparser/v2 v2.0.0/go.mod h1:Wri+At7QHww0WTrCBeu4J6bNtoV6mEfg5OIWRZA9qds=
-github.com/volkszaehler/mbmd v0.0.0-20210808132733-8235dc7d1327 h1:GhXik8mWOCLDq7sCJjHjSv49fYUvhxOMMhrGYqAFowI=
-github.com/volkszaehler/mbmd v0.0.0-20210808132733-8235dc7d1327/go.mod h1:oh17P6CJFJvVlFfLSgbOh+GdgmtuHpxik7gk7Zr/kxg=
+github.com/volkszaehler/mbmd v0.0.0-20211108155358-6a45861346c4 h1:uVLzRaRx7zV7+CPb8PFwCzlOjCxKXHQZeaVu0WpcmnI=
+github.com/volkszaehler/mbmd v0.0.0-20211108155358-6a45861346c4/go.mod h1:1icilpyGFks68DdAYWsVk0lKhWM7gYTqTnJSTk1b+4M=
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
 github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=