diff --git a/Dockerfile b/Dockerfile
index ea2203a..0d2c26c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,19 @@
+#   Copyright The containerd Authors.
+
+#   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.
+
+# -----------------------------------------------------------------------------
+
 # Build the Linux kernel, initrd ,and containerd shim for running nerbox
 
 ARG GO_VERSION=1.25.1
diff --git a/Makefile b/Makefile
index 0079bc9..d8aaa65 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,17 @@
+#   Copyright The containerd Authors.
+
+#   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.
+
 GO ?= go
 DOCKER ?= docker
 BUILDX ?= $(DOCKER) buildx
diff --git a/cmd/vminitd/networking.go b/cmd/vminitd/networking.go
index 0f7adf6..e5452d0 100644
--- a/cmd/vminitd/networking.go
+++ b/cmd/vminitd/networking.go
@@ -1,5 +1,21 @@
 //go:build linux
 
+/*
+   Copyright The containerd Authors.
+
+   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 main
 
 import (
diff --git a/internal/kvm/kvm_linux.go b/internal/kvm/kvm_linux.go
index fd8bdce..32f359b 100644
--- a/internal/kvm/kvm_linux.go
+++ b/internal/kvm/kvm_linux.go
@@ -1,3 +1,19 @@
+/*
+   Copyright The containerd Authors.
+
+   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 kvm
 
 import (
diff --git a/internal/kvm/kvm_others.go b/internal/kvm/kvm_others.go
index b440577..f125b82 100644
--- a/internal/kvm/kvm_others.go
+++ b/internal/kvm/kvm_others.go
@@ -1,5 +1,21 @@
 //go:build !linux
 
+/*
+   Copyright The containerd Authors.
+
+   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 kvm
 
 // CheckKVM is a no-op on non-Linux platforms.
diff --git a/internal/nwcfg/nwcfg.go b/internal/nwcfg/nwcfg.go
index 3b8b2f9..217d370 100644
--- a/internal/nwcfg/nwcfg.go
+++ b/internal/nwcfg/nwcfg.go
@@ -1,5 +1,20 @@
-// Package nwcfg describes the network config file passed to the VM along with the bundle.
+/*
+   Copyright The containerd Authors.
+
+   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 nwcfg describes the network config file passed to the VM along with the bundle.
 package nwcfg
 
 import "net/netip"
diff --git a/internal/shim/task/bundle/bundle.go b/internal/shim/task/bundle/bundle.go
index 2243353..656d96e 100644
--- a/internal/shim/task/bundle/bundle.go
+++ b/internal/shim/task/bundle/bundle.go
@@ -1,3 +1,19 @@
+/*
+   Copyright The containerd Authors.
+
+   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 bundle
 
 import (
diff --git a/internal/shim/task/ctrnetworking.go b/internal/shim/task/ctrnetworking.go
index 2387a2a..6e9c2c1 100644
--- a/internal/shim/task/ctrnetworking.go
+++ b/internal/shim/task/ctrnetworking.go
@@ -1,3 +1,19 @@
+/*
+   Copyright The containerd Authors.
+
+   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 task
 
 import (
diff --git a/internal/shim/task/networking_unix.go b/internal/shim/task/networking_unix.go
index 49331bb..f99666d 100644
--- a/internal/shim/task/networking_unix.go
+++ b/internal/shim/task/networking_unix.go
@@ -1,3 +1,19 @@
+/*
+   Copyright The containerd Authors.
+
+   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 task
 
 import (
diff --git a/internal/shim/task/networking_windows.go b/internal/shim/task/networking_windows.go
index 5f0383d..2bc55e0 100644
--- a/internal/shim/task/networking_windows.go
+++ b/internal/shim/task/networking_windows.go
@@ -1,3 +1,19 @@
+/*
+   Copyright The containerd Authors.
+
+   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 task
 
 import (
diff --git a/internal/sliceutil/sliceutil.go b/internal/sliceutil/sliceutil.go
index 74ec203..a0d9681 100644
--- a/internal/sliceutil/sliceutil.go
+++ b/internal/sliceutil/sliceutil.go
@@ -1,3 +1,19 @@
+/*
+   Copyright The containerd Authors.
+
+   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 sliceutil
 
 func Filter[T any](slice []T, fn func(T) bool) []T {
diff --git a/internal/sliceutil/sliceutil_test.go b/internal/sliceutil/sliceutil_test.go
index 8018bc2..f7a7915 100644
--- a/internal/sliceutil/sliceutil_test.go
+++ b/internal/sliceutil/sliceutil_test.go
@@ -1,3 +1,19 @@
+/*
+   Copyright The containerd Authors.
+
+   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 sliceutil
 
 import (
diff --git a/internal/virtionet/features.go b/internal/virtionet/features.go
index 0e8064d..64af5e9 100644
--- a/internal/virtionet/features.go
+++ b/internal/virtionet/features.go
@@ -1,3 +1,19 @@
+/*
+   Copyright The containerd Authors.
+
+   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 virtionet
 
 import "fmt"
diff --git a/internal/vminit/ctrnetworking/ctrnetworking.go b/internal/vminit/ctrnetworking/ctrnetworking.go
index f50467e..b91295c 100644
--- a/internal/vminit/ctrnetworking/ctrnetworking.go
+++ b/internal/vminit/ctrnetworking/ctrnetworking.go
@@ -1,5 +1,21 @@
 //go:build linux
 
+/*
+   Copyright The containerd Authors.
+
+   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 ctrnetworking
 
 import (
diff --git a/internal/vminit/vmnetworking/dhcp.go b/internal/vminit/vmnetworking/dhcp.go
index 1fae83e..d33b0a6 100644
--- a/internal/vminit/vmnetworking/dhcp.go
+++ b/internal/vminit/vmnetworking/dhcp.go
@@ -1,5 +1,21 @@
 //go:build linux
 
+/*
+   Copyright The containerd Authors.
+
+   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 vmnetworking
 
 import (
diff --git a/internal/vminit/vmnetworking/vmnetworking.go b/internal/vminit/vmnetworking/vmnetworking.go
index 8a8c9c3..d6a317f 100644
--- a/internal/vminit/vmnetworking/vmnetworking.go
+++ b/internal/vminit/vmnetworking/vmnetworking.go
@@ -1,5 +1,21 @@
 //go:build linux
 
+/*
+   Copyright The containerd Authors.
+
+   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 vmnetworking
 
 import (