diff --git a/.baseline/checkstyle/checkstyle-suppressions.xml b/.baseline/checkstyle/checkstyle-suppressions.xml
index 58b0d47711d6..60b0681a687d 100644
--- a/.baseline/checkstyle/checkstyle-suppressions.xml
+++ b/.baseline/checkstyle/checkstyle-suppressions.xml
@@ -2,6 +2,22 @@
 <!DOCTYPE suppressions PUBLIC
     "-//Checkstyle//DTD SuppressionFilter Configuration 1.2//EN"
     "https://checkstyle.org/dtds/suppressions_1_2.dtd">
+<!--
+    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
+
+         https://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.
+-->
 
 <!-- IMPORTANT ECLIPSE NOTE: If you change this file, you must restart Eclipse
  for your changes to take effect in its Checkstyle integration. -->
diff --git a/.baseline/checkstyle/checkstyle.xml b/.baseline/checkstyle/checkstyle.xml
index aec14e30b249..ab7e66d71480 100644
--- a/.baseline/checkstyle/checkstyle.xml
+++ b/.baseline/checkstyle/checkstyle.xml
@@ -2,7 +2,22 @@
 <!DOCTYPE module PUBLIC
         "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
         "https://checkstyle.org/dtds/configuration_1_3.dtd">
+<!--
+    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
 
+         https://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.
+-->
 <module name="Checker">
     <property name="charset" value="UTF-8"/>
     <property name="severity" value="error"/>
diff --git a/.baseline/idea/intellij-java-palantir-style.xml b/.baseline/idea/intellij-java-palantir-style.xml
index 81d85507e5f5..506a4955ddc4 100644
--- a/.baseline/idea/intellij-java-palantir-style.xml
+++ b/.baseline/idea/intellij-java-palantir-style.xml
@@ -1,3 +1,19 @@
+<!--
+    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
+
+         https://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.
+-->
 <project version="4">
   <component name="ProjectCodeStyleSettingsManager">
     <option name="PER_PROJECT_SETTINGS">
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 3b8300bb9831..dfaacd6ed6e9 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,3 +1,20 @@
+#
+# 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.
+#
+
 # Rich versions are used for better compatibility with GitHub's automated dependency tools (such as Dependabot and Renovate).
 # Without a rich version definition, dependabot will try to align different versions of the same library.