diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index d8ced04..d1a63db 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -81,3 +81,10 @@ jobs:
 
     - name: Run Tests
       run: go test -v ./...
+
+  check-license-lines:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Check License Lines
+      uses: kt3k/license_checker@v1.0.6
diff --git a/.licenserc.json b/.licenserc.json
new file mode 100644
index 0000000..7b827d6
--- /dev/null
+++ b/.licenserc.json
@@ -0,0 +1,12 @@
+{
+    "**/*.go": [
+        "// Copyright 2024 Blindspot Software",
+        "// Use of this source code is governed by a BSD-style",
+        "// license that can be found in the LICENSE file."
+        ],
+
+    "ignore": [
+        "protobuf/gen/",
+        "vendor/"
+    ]
+}
\ No newline at end of file
diff --git a/cmds/dutagent/common.go b/cmds/dutagent/common.go
index 77d5f88..d1b81d1 100644
--- a/cmds/dutagent/common.go
+++ b/cmds/dutagent/common.go
@@ -1,3 +1,7 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package main
 
 import (
diff --git a/cmds/dutagent/dutagent.go b/cmds/dutagent/dutagent.go
index f395507..95a576b 100644
--- a/cmds/dutagent/dutagent.go
+++ b/cmds/dutagent/dutagent.go
@@ -1,3 +1,7 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 // dutagent is the server of the DUT Control system.
 // The service ist designed to run on a single board computer,
 // which can handle the wiring to the devices under test (DUTs).
diff --git a/cmds/dutagent/rpc.go b/cmds/dutagent/rpc.go
index 2500b24..f6903b1 100644
--- a/cmds/dutagent/rpc.go
+++ b/cmds/dutagent/rpc.go
@@ -1,3 +1,6 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
 package main
 
 import (
diff --git a/cmds/dutagent/runRPC.go b/cmds/dutagent/runRPC.go
index de8ce06..a2236ad 100644
--- a/cmds/dutagent/runRPC.go
+++ b/cmds/dutagent/runRPC.go
@@ -1,3 +1,6 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
 package main
 
 import (
diff --git a/cmds/dutctl/dutctl.go b/cmds/dutctl/dutctl.go
index 33ff634..423df5b 100644
--- a/cmds/dutctl/dutctl.go
+++ b/cmds/dutctl/dutctl.go
@@ -1,6 +1,9 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 // dutctl is the client application of the DUT Control system.
 // It provides a command line interface to issue task on remote devices (DUTs).
-
 package main
 
 import (
diff --git a/cmds/dutctl/rpc.go b/cmds/dutctl/rpc.go
index 81dbb48..ad657da 100644
--- a/cmds/dutctl/rpc.go
+++ b/cmds/dutctl/rpc.go
@@ -1,3 +1,6 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
 package main
 
 import (
diff --git a/internal/chanio/chanio.go b/internal/chanio/chanio.go
index b026bd6..958fa3b 100644
--- a/internal/chanio/chanio.go
+++ b/internal/chanio/chanio.go
@@ -1,3 +1,7 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 // Package chanio provides a way to use channels as io.Reader and io.Writer.
 package chanio
 
diff --git a/internal/chanio/chanio_test.go b/internal/chanio/chanio_test.go
index 6ddb827..0a1fb0b 100644
--- a/internal/chanio/chanio_test.go
+++ b/internal/chanio/chanio_test.go
@@ -1,3 +1,6 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
 package chanio
 
 import (
diff --git a/internal/dutagent/broker.go b/internal/dutagent/broker.go
index 9a833cb..2655d08 100644
--- a/internal/dutagent/broker.go
+++ b/internal/dutagent/broker.go
@@ -1,3 +1,7 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 // Package broker provides utilities for a dutagent service to handel the RPC requests.
 package dutagent
 
diff --git a/internal/dutagent/init.go b/internal/dutagent/init.go
index f3b7369..578a4ab 100644
--- a/internal/dutagent/init.go
+++ b/internal/dutagent/init.go
@@ -1,3 +1,6 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
 package dutagent
 
 import (
diff --git a/internal/dutagent/session.go b/internal/dutagent/session.go
index 4b6f63e..7fcbd8d 100644
--- a/internal/dutagent/session.go
+++ b/internal/dutagent/session.go
@@ -1,3 +1,6 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
 package dutagent
 
 import (
diff --git a/internal/dutagent/worker.go b/internal/dutagent/worker.go
index 95472f3..70b8c4e 100644
--- a/internal/dutagent/worker.go
+++ b/internal/dutagent/worker.go
@@ -1,3 +1,6 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
 package dutagent
 
 import (
diff --git a/internal/fsm/fsm.go b/internal/fsm/fsm.go
index e574ce4..af7d236 100644
--- a/internal/fsm/fsm.go
+++ b/internal/fsm/fsm.go
@@ -1,3 +1,7 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 // Package fsm provides a simple but powerful finite state machine implementation.
 //
 // The design is inspired by Rob Pike's talk "Lexical Scanning in Go".
diff --git a/internal/fsm/fsm_test.go b/internal/fsm/fsm_test.go
index fadb2a5..9823054 100644
--- a/internal/fsm/fsm_test.go
+++ b/internal/fsm/fsm_test.go
@@ -1,3 +1,6 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
 package fsm
 
 import (
diff --git a/pkg/dut/dut.go b/pkg/dut/dut.go
index 4daa497..b57ee83 100644
--- a/pkg/dut/dut.go
+++ b/pkg/dut/dut.go
@@ -1,3 +1,7 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 // Package dut provides representation of the device-under-test (DUT).
 package dut
 
diff --git a/pkg/module/dummy/dummy_file_transfer.go b/pkg/module/dummy/dummy_file_transfer.go
index 0b6faec..d086649 100644
--- a/pkg/module/dummy/dummy_file_transfer.go
+++ b/pkg/module/dummy/dummy_file_transfer.go
@@ -1,3 +1,6 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
 package dummy
 
 import (
diff --git a/pkg/module/dummy/dummy_repeat.go b/pkg/module/dummy/dummy_repeat.go
index 4011b66..c3b8846 100644
--- a/pkg/module/dummy/dummy_repeat.go
+++ b/pkg/module/dummy/dummy_repeat.go
@@ -1,3 +1,6 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
 package dummy
 
 import (
diff --git a/pkg/module/dummy/dummy_status.go b/pkg/module/dummy/dummy_status.go
index 642f6c7..c480ea4 100644
--- a/pkg/module/dummy/dummy_status.go
+++ b/pkg/module/dummy/dummy_status.go
@@ -1,3 +1,7 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 // Dummy module implementation.
 package dummy
 
diff --git a/pkg/module/module.go b/pkg/module/module.go
index 6468755..a8d1a09 100644
--- a/pkg/module/module.go
+++ b/pkg/module/module.go
@@ -1,3 +1,7 @@
+// Copyright 2024 Blindspot Software
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 // Package module provides a plugin system for the DUT package.
 // Modules are the building blocks of a command and host the actual implementation
 // of the steps that are executed on a device-under-test (DUT).