diff --git a/ncsid/src/platforms/nemora/portable/default_addresses.h b/ncsid/src/platforms/nemora/portable/default_addresses.h
index 469264b..8d2aba2 100644
--- a/ncsid/src/platforms/nemora/portable/default_addresses.h
+++ b/ncsid/src/platforms/nemora/portable/default_addresses.h
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * 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.
+ */
+
 #ifndef PLATFORMS_NEMORA_PORTABLE_DEFAULT_ADDRESSES_H_
 #define PLATFORMS_NEMORA_PORTABLE_DEFAULT_ADDRESSES_H_
 //
diff --git a/ncsid/src/platforms/nemora/portable/ncsi.h b/ncsid/src/platforms/nemora/portable/ncsi.h
index 18c535d..1e0f8a0 100644
--- a/ncsid/src/platforms/nemora/portable/ncsi.h
+++ b/ncsid/src/platforms/nemora/portable/ncsi.h
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * 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.
+ */
+
 #ifndef PLATFORMS_NEMORA_PORTABLE_NCSI_H_
 #define PLATFORMS_NEMORA_PORTABLE_NCSI_H_
 
diff --git a/ncsid/src/platforms/nemora/portable/ncsi_client.c b/ncsid/src/platforms/nemora/portable/ncsi_client.c
index 38ab9e3..403f0a7 100644
--- a/ncsid/src/platforms/nemora/portable/ncsi_client.c
+++ b/ncsid/src/platforms/nemora/portable/ncsi_client.c
@@ -1,4 +1,20 @@
 /*
+ * Copyright 2021 Google LLC
+ *
+ * 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.
+ */
+
+/*
  * Library of NC-SI commands compliant with version 1.0.0.
  *
  * This implements a subset of the commands provided in the specification.
diff --git a/ncsid/src/platforms/nemora/portable/ncsi_client.h b/ncsid/src/platforms/nemora/portable/ncsi_client.h
index 0354b30..29fc878 100644
--- a/ncsid/src/platforms/nemora/portable/ncsi_client.h
+++ b/ncsid/src/platforms/nemora/portable/ncsi_client.h
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * 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.
+ */
+
 #ifndef PLATFORMS_NEMORA_PORTABLE_NCSI_CLIENT_H_
 #define PLATFORMS_NEMORA_PORTABLE_NCSI_CLIENT_H_
 
diff --git a/ncsid/src/platforms/nemora/portable/ncsi_fsm.c b/ncsid/src/platforms/nemora/portable/ncsi_fsm.c
index 0bef65d..11d34dd 100644
--- a/ncsid/src/platforms/nemora/portable/ncsi_fsm.c
+++ b/ncsid/src/platforms/nemora/portable/ncsi_fsm.c
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * 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.
+ */
+
 #include <string.h>
 
 #include <arpa/inet.h>
diff --git a/ncsid/src/platforms/nemora/portable/ncsi_fsm.h b/ncsid/src/platforms/nemora/portable/ncsi_fsm.h
index 9ab2d82..de71345 100644
--- a/ncsid/src/platforms/nemora/portable/ncsi_fsm.h
+++ b/ncsid/src/platforms/nemora/portable/ncsi_fsm.h
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * 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.
+ */
+
 #ifndef PLATFORMS_NEMORA_PORTABLE_NCSI_FSM_H_
 #define PLATFORMS_NEMORA_PORTABLE_NCSI_FSM_H_
 
diff --git a/ncsid/src/platforms/nemora/portable/ncsi_server.c b/ncsid/src/platforms/nemora/portable/ncsi_server.c
index c7bc5e7..a6e14d5 100644
--- a/ncsid/src/platforms/nemora/portable/ncsi_server.c
+++ b/ncsid/src/platforms/nemora/portable/ncsi_server.c
@@ -1,4 +1,20 @@
 /*
+ * Copyright 2021 Google LLC
+ *
+ * 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.
+ */
+
+/*
  * Library of NC-SI commands compliant with version 1.0.0.
  *
  * This implements a subset of the commands provided in the specification.
diff --git a/ncsid/src/platforms/nemora/portable/ncsi_server.h b/ncsid/src/platforms/nemora/portable/ncsi_server.h
index 6a411aa..842154a 100644
--- a/ncsid/src/platforms/nemora/portable/ncsi_server.h
+++ b/ncsid/src/platforms/nemora/portable/ncsi_server.h
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * 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.
+ */
+
 #ifndef PLATFORMS_NEMORA_PORTABLE_NCSI_SERVER_H_
 #define PLATFORMS_NEMORA_PORTABLE_NCSI_SERVER_H_
 
diff --git a/ncsid/src/platforms/nemora/portable/net_types.h b/ncsid/src/platforms/nemora/portable/net_types.h
index 872d94f..240a439 100644
--- a/ncsid/src/platforms/nemora/portable/net_types.h
+++ b/ncsid/src/platforms/nemora/portable/net_types.h
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * 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.
+ */
+
 #ifndef PLATFORMS_NEMORA_PORTABLE_NET_TYPES_H_
 #define PLATFORMS_NEMORA_PORTABLE_NET_TYPES_H_