diff --git a/.travis.yml b/.travis.yml
index 25fcfb1..c99741f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,15 +1,12 @@
 language: go
 go:
-  - 1.6.3
-  - 1.7.3
+  - 1.11.x
+  - 1.12.x
 sudo: false
 install:
-  - go get -d -t -v ./...
-  - go get -v golang.org/x/tools/cover
-  - go get -v github.com/bradfitz/goimports
-  - go get -v github.com/golang/lint/golint
+  - go get -v github.com/golangci/golangci-lint/cmd/golangci-lint
 script:
-  - export PATH=$PATH:$HOME/gopath/bin
+  - export GO111MODULE=on
   - ./goclean.sh
 after_success:
   - go get -v github.com/mattn/goveralls
diff --git a/goclean.sh b/goclean.sh
index 5e996cb..5cf1890 100755
--- a/goclean.sh
+++ b/goclean.sh
@@ -1,21 +1,35 @@
 #!/bin/bash
 # The script does automatic checking on a Go package and its sub-packages, including:
 # 1. gofmt         (http://golang.org/cmd/gofmt/)
-# 2. goimports     (https://github.com/bradfitz/goimports)
-# 3. golint        (https://github.com/golang/lint)
-# 4. go vet        (http://golang.org/cmd/vet)
-# 5. test coverage (http://blog.golang.org/cover)
+# 2. golint        (https://github.com/golang/lint)
+# 3. go vet        (http://golang.org/cmd/vet)
+# 4. gosimple      (https://github.com/dominikh/go-simple)
+# 5. unconvert     (https://github.com/mdempsky/unconvert)
+# 6. goimports     (https://github.com/bradfitz/goimports)
+# 7. race detector (http://blog.golang.org/race-detector)
+# 8. test coverage (http://blog.golang.org/cover)
 
-set -e
+set -ex
 
 # Automatic checks
 cd xdr2
-test -z "$(gofmt -l -w .     | tee /dev/stderr)"
-test -z "$(goimports -l -w . | tee /dev/stderr)"
-test -z "$(golint .          | tee /dev/stderr)"
-go vet ./...
+
+# run tests
 env GORACE="halt_on_error=1" go test -v -race ./...
 
+# golangci-lint (github.com/golangci/golangci-lint) is used to run each each
+# static checker.
+
+# check linters
+golangci-lint run --disable-all --deadline=10m \
+  --enable=gofmt \
+  --enable=golint \
+  --enable=vet \
+  --enable=gosimple \
+  --enable=unconvert \
+  --enable=ineffassign \
+  --enable=goimports
+
 # Run test coverage on each subdirectories and merge the coverage profile.
 
 echo "mode: count" > profile.cov
diff --git a/xdr2/decode_test.go b/xdr2/decode_test.go
index 310629d..a8ee6b5 100644
--- a/xdr2/decode_test.go
+++ b/xdr2/decode_test.go
@@ -270,8 +270,8 @@ func TestUnmarshal(t *testing.T) {
 		// float64 - XDR Double-precision Floating-Point
 		{[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, float64(0), 8, nil},
 		{[]byte{0x40, 0x09, 0x21, 0xfb, 0x54, 0x44, 0x2d, 0x18}, float64(3.141592653589793), 8, nil},
-		{[]byte{0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, float64(math.Inf(-1)), 8, nil},
-		{[]byte{0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, float64(math.Inf(0)), 8, nil},
+		{[]byte{0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, math.Inf(-1), 8, nil},
+		{[]byte{0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, math.Inf(0), 8, nil},
 		// Expected Failures -- not enough bytes
 		{[]byte{0xff, 0xff, 0xff}, float64(0), 3, &UnmarshalError{ErrorCode: ErrIO}},
 		{[]byte{0xff, 0x00, 0xff, 0x00}, float64(0), 4, &UnmarshalError{ErrorCode: ErrIO}},
@@ -470,8 +470,8 @@ func TestDecoder(t *testing.T) {
 		// Double
 		{fDecodeDouble, []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, float64(0), 8, 0, nil},
 		{fDecodeDouble, []byte{0x40, 0x09, 0x21, 0xfb, 0x54, 0x44, 0x2d, 0x18}, float64(3.141592653589793), 8, 0, nil},
-		{fDecodeDouble, []byte{0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, float64(math.Inf(-1)), 8, 0, nil},
-		{fDecodeDouble, []byte{0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, float64(math.Inf(0)), 8, 0, nil},
+		{fDecodeDouble, []byte{0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, math.Inf(-1), 8, 0, nil},
+		{fDecodeDouble, []byte{0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, math.Inf(0), 8, 0, nil},
 
 		// Enum
 		{fDecodeEnum, []byte{0x00, 0x00, 0x00, 0x00}, int32(0), 4, 0, nil},
@@ -572,9 +572,7 @@ func TestDecoder(t *testing.T) {
 	}
 	for _, decoder := range decoders {
 		for i, test := range tests {
-			err = nil
-			var dec *Decoder
-			dec = decoder(test)
+			dec := decoder(test)
 			switch test.f {
 			case fDecodeBool:
 				rv, n, err = dec.DecodeBool()
diff --git a/xdr2/encode.go b/xdr2/encode.go
index 7bac268..cc90397 100644
--- a/xdr2/encode.go
+++ b/xdr2/encode.go
@@ -167,7 +167,7 @@ func (enc *Encoder) EncodeEnum(v int32, validEnums map[int32]bool) (int, error)
 // 	Represented as an XDR encoded enumeration where 0 is false and 1 is true
 func (enc *Encoder) EncodeBool(v bool) (int, error) {
 	i := int32(0)
-	if v == true {
+	if v {
 		i = 1
 	}
 	return enc.EncodeInt(i)
@@ -383,7 +383,7 @@ func (enc *Encoder) encodeFixedArray(v reflect.Value, ignoreOpaque bool) (int, e
 		// copying the array into a new slice.  This is rather ugly, but
 		// the inability to create a constant slice from an
 		// unaddressable array is a limitation of Go.
-		slice := make([]byte, v.Len(), v.Len())
+		slice := make([]byte, v.Len())
 		reflect.Copy(reflect.ValueOf(slice), v)
 		return enc.EncodeFixedOpaque(slice)
 	}
diff --git a/xdr2/encode_test.go b/xdr2/encode_test.go
index 1b04cfa..52485a0 100644
--- a/xdr2/encode_test.go
+++ b/xdr2/encode_test.go
@@ -222,8 +222,8 @@ func TestMarshal(t *testing.T) {
 		// float64 - XDR Double-precision Floating-Point
 		{float64(0), []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, 8, nil},
 		{float64(3.141592653589793), []byte{0x40, 0x09, 0x21, 0xfb, 0x54, 0x44, 0x2d, 0x18}, 8, nil},
-		{float64(math.Inf(-1)), []byte{0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, 8, nil},
-		{float64(math.Inf(0)), []byte{0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, 8, nil},
+		{math.Inf(-1), []byte{0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, 8, nil},
+		{math.Inf(0), []byte{0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, 8, nil},
 		// Expected Failure -- Short write
 		{float64(3.141592653589793), []byte{0x40, 0x09, 0x21, 0xfb, 0x54, 0x44, 0x2d}, 7, &MarshalError{ErrorCode: ErrIO}},
 
@@ -404,8 +404,8 @@ func TestEncoder(t *testing.T) {
 		// Double
 		{fEncodeDouble, float64(0), []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, 8, nil},
 		{fEncodeDouble, float64(3.141592653589793), []byte{0x40, 0x09, 0x21, 0xfb, 0x54, 0x44, 0x2d, 0x18}, 8, nil},
-		{fEncodeDouble, float64(math.Inf(-1)), []byte{0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, 8, nil},
-		{fEncodeDouble, float64(math.Inf(0)), []byte{0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, 8, nil},
+		{fEncodeDouble, math.Inf(-1), []byte{0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, 8, nil},
+		{fEncodeDouble, math.Inf(0), []byte{0x7F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, 8, nil},
 		// Expected Failure -- Short write
 		{fEncodeDouble, float64(3.141592653589793), []byte{0x40, 0x09, 0x21, 0xfb, 0x54, 0x44, 0x2d}, 7, &MarshalError{ErrorCode: ErrIO}},
 
@@ -493,7 +493,6 @@ func TestEncoder(t *testing.T) {
 	var n int
 
 	for i, test := range tests {
-		err = nil
 		data := newFixedWriter(test.wantN)
 		enc := NewEncoder(data)
 		switch test.f {
diff --git a/xdr2/fixedIO_test.go b/xdr2/fixedIO_test.go
index d329a9a..f7fca1e 100644
--- a/xdr2/fixedIO_test.go
+++ b/xdr2/fixedIO_test.go
@@ -53,7 +53,7 @@ func (w *fixedWriter) Bytes() []byte {
 // newFixedWriter returns a new io.Writer that will error once more bytes than
 // the specified max have been written.
 func newFixedWriter(max int) *fixedWriter {
-	b := make([]byte, max, max)
+	b := make([]byte, max)
 	fw := fixedWriter{b, 0}
 	return &fw
 }
diff --git a/xdr2/go.mod b/xdr2/go.mod
new file mode 100644
index 0000000..3ba84ba
--- /dev/null
+++ b/xdr2/go.mod
@@ -0,0 +1 @@
+module github.com/davecgh/go-xdr/xdr2