diff --git a/Dockerfile b/Dockerfile
index dbacf30..fec71fa 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,16 @@
+# Copyright 2019 Cartesi Pte. Ltd.
+#
+# 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.
+#
+
 ARG TOOLCHAIN_VERSION=latest
 FROM cartesi/image-toolchain:${TOOLCHAIN_VERSION}
 
diff --git a/Makefile b/Makefile
index 335e6bd..e944750 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,16 @@
+# Copyright 2019 Cartesi Pte. Ltd.
+#
+# 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.
+#
+
 .PHONY: build push run share
 
 TAG ?= latest
diff --git a/skel/sbin/init b/skel/sbin/init
index 89ba3c2..b11a38d 100755
--- a/skel/sbin/init
+++ b/skel/sbin/init
@@ -1,5 +1,19 @@
 #!/bin/sh
 
+# Copyright 2019 Cartesi Pte. Ltd.
+#
+# 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.
+#
+
+
 export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin
 export HOME=/root