diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 0000000..bef5a6f
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,19 @@
+name: Run tests
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '>=1.20.0'
+      - name: Run tests
+        run: go test -v
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
index d54bbcc..b359389 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2016-2017, Eleftherios (Lefteris) Zafiris
+Copyright (c) 2016-2024, Eleftherios (Lefteris) Zafiris
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without modification,
diff --git a/Readme.md b/Readme.md
index dbfee79..74af993 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,5 +1,4 @@
 # g711
---
     import "github.com/zaf/g711"
 
 Package g711 implements encoding and decoding of G711 PCM sound data. G.711 is
diff --git a/alaw.go b/alaw.go
index e58e53f..34986fe 100644
--- a/alaw.go
+++ b/alaw.go
@@ -1,5 +1,5 @@
 /*
-	Copyright (C) 2016 - 2017, Lefteris Zafiris <zaf@fastmail.com>
+	Copyright (C) 2016 - 2024, Lefteris Zafiris <zaf@fastmail.com>
 
 	This program is free software, distributed under the terms of
 	the BSD 3-Clause License. See the LICENSE file
diff --git a/alaw_test.go b/alaw_test.go
index ffcd94c..f3c0f52 100644
--- a/alaw_test.go
+++ b/alaw_test.go
@@ -1,5 +1,5 @@
 /*
-	Copyright (C) 2016 - 2017, Lefteris Zafiris <zaf@fastmail.com>
+	Copyright (C) 2016 - 2024, Lefteris Zafiris <zaf@fastmail.com>
 
 	This program is free software, distributed under the terms of
 	the BSD 3-Clause License. See the LICENSE file
diff --git a/cmd/g711dec/g711dec.go b/cmd/g711dec/g711dec.go
index fd1447e..0a2ab20 100644
--- a/cmd/g711dec/g711dec.go
+++ b/cmd/g711dec/g711dec.go
@@ -1,5 +1,5 @@
 /*
-	Copyright (C) 2016 - 2017, Lefteris Zafiris <zaf@fastmail.com>
+	Copyright (C) 2016 - 2024, Lefteris Zafiris <zaf@fastmail.com>
 
 	This program is free software, distributed under the terms of
 	the BSD 3-Clause License. See the LICENSE file
diff --git a/cmd/g711enc/g711enc.go b/cmd/g711enc/g711enc.go
index b03abff..49d9655 100644
--- a/cmd/g711enc/g711enc.go
+++ b/cmd/g711enc/g711enc.go
@@ -1,5 +1,5 @@
 /*
-	Copyright (C) 2016 - 2017, Lefteris Zafiris <zaf@fastmail.com>
+	Copyright (C) 2016 - 2024, Lefteris Zafiris <zaf@fastmail.com>
 
 	This program is free software, distributed under the terms of
 	the BSD 3-Clause License. See the LICENSE file
@@ -14,6 +14,7 @@ package main
 
 import (
 	"fmt"
+	"io"
 	"os"
 	"path/filepath"
 	"strings"
@@ -21,6 +22,8 @@ import (
 	"github.com/zaf/g711"
 )
 
+const wavHeader = 44
+
 func main() {
 	if len(os.Args) < 3 || os.Args[1] == "help" || os.Args[1] == "--help" || (os.Args[1] != "ulaw" && os.Args[1] != "alaw") {
 		fmt.Printf("%s Encodes 16bit 8kHz LPCM data to 8bit G711 PCM\n", os.Args[0])
@@ -43,7 +46,7 @@ func main() {
 }
 
 func encodeG711(file, format string) error {
-	input, err := os.ReadFile(file)
+	input, err := os.Open(file)
 	if err != nil {
 		return err
 	}
@@ -72,9 +75,8 @@ func encodeG711(file, format string) error {
 		}
 	}
 	if extension == ".wav" {
-		_, err = encoder.Write(input[44:]) // Skip WAV header
-		return err
+		input.Seek(wavHeader, 0) // Skip wav header
 	}
-	_, err = encoder.Write(input)
+	_, err = io.Copy(encoder, input)
 	return err
 }
diff --git a/g711.go b/g711.go
index 8934459..3d9479c 100644
--- a/g711.go
+++ b/g711.go
@@ -1,5 +1,5 @@
 /*
-	Copyright (C) 2016 - 2017, Lefteris Zafiris <zaf@fastmail.com>
+	Copyright (C) 2016 - 2024, Lefteris Zafiris <zaf@fastmail.com>
 
 	This program is free software, distributed under the terms of
 	the BSD 3-Clause License. See the LICENSE file
diff --git a/g711_test.go b/g711_test.go
index c67f008..58f9b1d 100644
--- a/g711_test.go
+++ b/g711_test.go
@@ -1,5 +1,5 @@
 /*
-	Copyright (C) 2016 - 2017, Lefteris Zafiris <zaf@fastmail.com>
+	Copyright (C) 2016 - 2024, Lefteris Zafiris <zaf@fastmail.com>
 
 	This program is free software, distributed under the terms of
 	the BSD 3-Clause License. See the LICENSE file
diff --git a/go.mod b/go.mod
index 6e529b5..82251bb 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module github.com/zaf/g711
 
-go 1.17
+go 1.20
diff --git a/ulaw.go b/ulaw.go
index 0c23b59..e04996a 100644
--- a/ulaw.go
+++ b/ulaw.go
@@ -1,5 +1,5 @@
 /*
-	Copyright (C) 2016 - 2017, Lefteris Zafiris <zaf@fastmail.com>
+	Copyright (C) 2016 - 2024, Lefteris Zafiris <zaf@fastmail.com>
 
 	This program is free software, distributed under the terms of
 	the BSD 3-Clause License. See the LICENSE file
diff --git a/ulaw_test.go b/ulaw_test.go
index f07ab4d..b9efdd6 100644
--- a/ulaw_test.go
+++ b/ulaw_test.go
@@ -1,5 +1,5 @@
 /*
-	Copyright (C) 2016 - 2017, Lefteris Zafiris <zaf@fastmail.com>
+	Copyright (C) 2016 - 2024, Lefteris Zafiris <zaf@fastmail.com>
 
 	This program is free software, distributed under the terms of
 	the BSD 3-Clause License. See the LICENSE file