diff --git a/go.mod b/go.mod
index 9026529..23506dc 100644
--- a/go.mod
+++ b/go.mod
@@ -1,7 +1,7 @@
 module github.com/pvainio/vallox-rs485
 
-go 1.17
+go 1.20
 
 require github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07
 
-require golang.org/x/sys v0.0.0-20211007075335-d3039528d8ac // indirect
+require golang.org/x/sys v0.6.0 // indirect
diff --git a/go.sum b/go.sum
index 78e7c93..d25a6e7 100644
--- a/go.sum
+++ b/go.sum
@@ -2,3 +2,5 @@ github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07 h1:UyzmZLoiDWMRywV4DUY
 github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07/go.mod h1:kDXzergiv9cbyO7IOYJZWg1U88JhDg3PB6klq9Hg2pA=
 golang.org/x/sys v0.0.0-20211007075335-d3039528d8ac h1:oN6lz7iLW/YC7un8pq+9bOLyXrprv2+DKfkJY+2LJJw=
 golang.org/x/sys v0.0.0-20211007075335-d3039528d8ac/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=