diff --git a/lib/ocaml/src/Makefile b/lib/ocaml/src/Makefile
index 20b0986..42ec8db 100644
--- a/lib/ocaml/src/Makefile
+++ b/lib/ocaml/src/Makefile
@@ -1,3 +1,22 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you 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.
+#
+
 SOURCES = Thrift.ml TBinaryProtocol.ml TSocket.ml TChannelTransport.ml TServer.ml TSimpleServer.ml TServerSocket.ml TThreadedServer.ml
 RESULT = thrift
 LIBS = unix threads
diff --git a/lib/ocaml/src/TBinaryProtocol.ml b/lib/ocaml/src/TBinaryProtocol.ml
index 109eeaa..a06cc9a 100644
--- a/lib/ocaml/src/TBinaryProtocol.ml
+++ b/lib/ocaml/src/TBinaryProtocol.ml
@@ -1,3 +1,22 @@
+(*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you 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.
+*)
+
 open Thrift
 
 module P = Protocol
diff --git a/lib/ocaml/src/TChannelTransport.ml b/lib/ocaml/src/TChannelTransport.ml
index 9678e5a..0f7d616 100644
--- a/lib/ocaml/src/TChannelTransport.ml
+++ b/lib/ocaml/src/TChannelTransport.ml
@@ -1,3 +1,22 @@
+(*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you 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.
+*)
+
 open Thrift
 module T = Transport
 
diff --git a/lib/ocaml/src/TServer.ml b/lib/ocaml/src/TServer.ml
index bd97ab9..fc51efa 100644
--- a/lib/ocaml/src/TServer.ml
+++ b/lib/ocaml/src/TServer.ml
@@ -1,3 +1,22 @@
+(*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you 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.
+*)
+
 open Thrift
 
 class virtual t
diff --git a/lib/ocaml/src/TServerSocket.ml b/lib/ocaml/src/TServerSocket.ml
index 1e82609..405ef82 100644
--- a/lib/ocaml/src/TServerSocket.ml
+++ b/lib/ocaml/src/TServerSocket.ml
@@ -1,3 +1,22 @@
+(*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you 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.
+*)
+
 open Thrift
 
 class t port =
diff --git a/lib/ocaml/src/TSimpleServer.ml b/lib/ocaml/src/TSimpleServer.ml
index db3ac3b..d19d8c5 100644
--- a/lib/ocaml/src/TSimpleServer.ml
+++ b/lib/ocaml/src/TSimpleServer.ml
@@ -1,3 +1,22 @@
+(*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you 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.
+*)
+
 open Thrift
 module S = TServer
 
diff --git a/lib/ocaml/src/TSocket.ml b/lib/ocaml/src/TSocket.ml
index 2d82437..109e11c 100644
--- a/lib/ocaml/src/TSocket.ml
+++ b/lib/ocaml/src/TSocket.ml
@@ -1,3 +1,22 @@
+(*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you 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.
+*)
+
 open Thrift
 
 module T = Transport
diff --git a/lib/ocaml/src/TThreadedServer.ml b/lib/ocaml/src/TThreadedServer.ml
index 702cb22..4462dbd 100644
--- a/lib/ocaml/src/TThreadedServer.ml
+++ b/lib/ocaml/src/TThreadedServer.ml
@@ -1,3 +1,22 @@
+(*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you 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.
+*)
+
 open Thrift
 
 class t
diff --git a/lib/ocaml/src/Thrift.ml b/lib/ocaml/src/Thrift.ml
index 1a9130f..0d16470 100644
--- a/lib/ocaml/src/Thrift.ml
+++ b/lib/ocaml/src/Thrift.ml
@@ -1,3 +1,22 @@
+(*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you 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.
+*)
+
 exception Break;;
 exception Thrift_error;;
 exception Field_empty of string;;