diff --git a/go.mod b/go.mod
index 54712103d..3461f609d 100644
--- a/go.mod
+++ b/go.mod
@@ -101,7 +101,7 @@ require (
 	github.com/gorilla/mux v1.8.1
 	github.com/gorilla/websocket v1.5.1
 	github.com/gosnmp/gosnmp v1.37.0
-	github.com/grid-x/modbus v0.0.0-20211113184042-7f2251c342c9
+	github.com/grid-x/modbus v0.0.0-20240503115206-582f2ab60a18
 	github.com/gwos/tcg/sdk v0.0.0-20231124052037-1e832b843240
 	github.com/harlow/kinesis-consumer v0.3.6-0.20211204214318-c2b9f79d7ab6
 	github.com/hashicorp/consul/api v1.26.1
diff --git a/go.sum b/go.sum
index 3a78e8974..143c3984a 100644
--- a/go.sum
+++ b/go.sum
@@ -1439,9 +1439,8 @@ github.com/gosnmp/gosnmp v1.37.0 h1:/Tf8D3b9wrnNuf/SfbvO+44mPrjVphBhRtcGg22V07Y=
 github.com/gosnmp/gosnmp v1.37.0/go.mod h1:GDH9vNqpsD7f2HvZhKs5dlqSEcAS6s6Qp099oZRCR+M=
 github.com/grafana/regexp v0.0.0-20221122212121-6b5c0a4cb7fd h1:PpuIBO5P3e9hpqBD0O/HjhShYuM6XE0i/lbE6J94kww=
 github.com/grafana/regexp v0.0.0-20221122212121-6b5c0a4cb7fd/go.mod h1:M5qHK+eWfAv8VR/265dIuEpL3fNfeC21tXXp9itM24A=
-github.com/grid-x/modbus v0.0.0-20211113184042-7f2251c342c9 h1:Q7e9kXS3sRbTjsNDKazbcbDSGAKjFdk096M3qYbwNpE=
-github.com/grid-x/modbus v0.0.0-20211113184042-7f2251c342c9/go.mod h1:qVX2WhsI5xyAoM6I/MV1bXSKBPdLAjp7pCvieO/S0AY=
-github.com/grid-x/serial v0.0.0-20191104121038-e24bc9bf6f08/go.mod h1:kdOd86/VGFWRrtkNwf1MPk0u1gIjc4Y7R2j7nhwc7Rk=
+github.com/grid-x/modbus v0.0.0-20240503115206-582f2ab60a18 h1:8V5xRtdD70kGC4/IHqFq+kcBSWr4k6nscAUgWwJ6A5k=
+github.com/grid-x/modbus v0.0.0-20240503115206-582f2ab60a18/go.mod h1:WpbUAyptAAi0VAriSRopZa6uhiJOJCTz7KFvgGtNRXc=
 github.com/grid-x/serial v0.0.0-20211107191517-583c7356b3aa h1:Rsn6ARgNkXrsXJIzhkE4vQr5Gbx2LvtEMv4BJOK4LyU=
 github.com/grid-x/serial v0.0.0-20211107191517-583c7356b3aa/go.mod h1:kdOd86/VGFWRrtkNwf1MPk0u1gIjc4Y7R2j7nhwc7Rk=
 github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
@@ -3319,8 +3318,8 @@ modernc.org/token v1.0.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
 modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
 modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
 modernc.org/z v1.5.1/go.mod h1:eWFB510QWW5Th9YGZT81s+LwvaAs3Q2yr4sP0rmLkv8=
-pgregory.net/rapid v0.4.7 h1:MTNRktPuv5FNqOO151TM9mDTa+XHcX6ypYeISDVD14g=
-pgregory.net/rapid v0.4.7/go.mod h1:UYpPVyjFHzYBGHIxLFoupi8vwk6rXNzRY9OMvVxFIOU=
+pgregory.net/rapid v1.1.0 h1:CMa0sjHSru3puNx+J0MIAuiiEV4N0qj8/cMWGBBCsjw=
+pgregory.net/rapid v1.1.0/go.mod h1:PY5XlDGj0+V1FCq0o192FdRhpKHGTRIWBgqjDBTrq04=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
diff --git a/plugins/inputs/modbus/configuration_request_test.go b/plugins/inputs/modbus/configuration_request_test.go
index c8cd65e1f..5282fb994 100644
--- a/plugins/inputs/modbus/configuration_request_test.go
+++ b/plugins/inputs/modbus/configuration_request_test.go
@@ -2344,7 +2344,7 @@ func TestRequestMultipleSlavesOneFail(t *testing.T) {
 	actual := acc.GetTelegrafMetrics()
 	testutil.RequireMetricsEqual(t, expected, actual, testutil.IgnoreTime(), testutil.SortMetrics())
 	require.Len(t, acc.Errors, 1)
-	require.EqualError(t, acc.FirstError(), "slave 2: modbus: exception '11' (gateway target device failed to respond), function '131'")
+	require.ErrorContains(t, acc.FirstError(), "slave 2: modbus: exception '11' (gateway target device failed to respond)")
 }
 
 func TestRequestOptimizationShrink(t *testing.T) {
diff --git a/plugins/inputs/modbus/modbus_test.go b/plugins/inputs/modbus/modbus_test.go
index cf11b15ec..f81db6725 100644
--- a/plugins/inputs/modbus/modbus_test.go
+++ b/plugins/inputs/modbus/modbus_test.go
@@ -249,7 +249,7 @@ func TestRetryFailExhausted(t *testing.T) {
 
 	require.NoError(t, modbus.Gather(&acc))
 	require.Len(t, acc.Errors, 1)
-	require.EqualError(t, acc.FirstError(), "slave 1: modbus: exception '6' (server device busy), function '129'")
+	require.ErrorContains(t, acc.FirstError(), "slave 1: modbus: exception '6' (server device busy)")
 }
 
 func TestRetryFailIllegal(t *testing.T) {
@@ -292,7 +292,7 @@ func TestRetryFailIllegal(t *testing.T) {
 
 	require.NoError(t, modbus.Gather(&acc))
 	require.Len(t, acc.Errors, 1)
-	require.EqualError(t, acc.FirstError(), "slave 1: modbus: exception '1' (illegal function), function '129'")
+	require.ErrorContains(t, acc.FirstError(), "slave 1: modbus: exception '1' (illegal function)")
 	require.Equal(t, 1, counter)
 }