diff --git a/.dir-locals.el b/.dir-locals.el
new file mode 100644
index 0000000000..2c3da6c590
--- /dev/null
+++ b/.dir-locals.el
@@ -0,0 +1,16 @@
+;;   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.
+
+((nil . ((c-basic-offset . 3))))
\ No newline at end of file