diff --git a/examples/notebook_cli.ps1 b/examples/notebook_cli.ps1
index a25cefd..2e5212d 100644
--- a/examples/notebook_cli.ps1
+++ b/examples/notebook_cli.ps1
@@ -1,3 +1,17 @@
+# Copyright 2024 Florian Beisel
+# 
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 # Define API URLs
 $loginUrl = "http://localhost:8080/api/v1/login"
 $generateNotebookUrl = "http://localhost:8080/api/v1/notebook"
diff --git a/models/error.go b/models/error.go
index c44e8c6..2f895e7 100644
--- a/models/error.go
+++ b/models/error.go
@@ -1,3 +1,17 @@
+// Copyright 2024 Florian Beisel
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package models
 
 type ErrorResponse struct {
diff --git a/models/hostname.go b/models/hostname.go
index 8affc69..ab0d6e9 100644
--- a/models/hostname.go
+++ b/models/hostname.go
@@ -1,3 +1,17 @@
+// Copyright 2024 Florian Beisel
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package models
 
 import "time"
diff --git a/models/login.go b/models/login.go
index 3d23837..9897f4b 100644
--- a/models/login.go
+++ b/models/login.go
@@ -1,3 +1,17 @@
+// Copyright 2024 Florian Beisel
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package models
 
 // User Credentials Model
diff --git a/models/user.go b/models/user.go
index ba68ed5..33bc087 100644
--- a/models/user.go
+++ b/models/user.go
@@ -1,3 +1,17 @@
+// Copyright 2024 Florian Beisel
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package models
 
 // User Model