diff --git a/checkstyle.xml b/checkstyle.xml
index aee0256ef..9da0ff7f0 100644
--- a/checkstyle.xml
+++ b/checkstyle.xml
@@ -288,5 +288,13 @@
         <module name="SuppressWarningsHolder"/>
     </module>
     <module name="SuppressWarningsFilter"/>
+    <module name="RegexpHeader">
+        <property name="headerFile" value="${checkstyle.header.file}"/>
+        <property name="fileExtensions" value="java,xml"/>
+    </module>
+    <module name="SuppressionSingleFilter">
+        <property name="checks" value="RegexpHeader"/>
+        <property name="files" value=".*\.properties$"/>
+    </module>
     <module name="NewlineAtEndOfFile"/>
 </module>
diff --git a/dapr-spring/dapr-spring-boot-tests/src/main/java/io/dapr/spring/boot/testcontainers/service/connection/DaprContainerConnectionDetailsFactory.java b/dapr-spring/dapr-spring-boot-tests/src/main/java/io/dapr/spring/boot/testcontainers/service/connection/DaprContainerConnectionDetailsFactory.java
index 12a822966..e2c845368 100644
--- a/dapr-spring/dapr-spring-boot-tests/src/main/java/io/dapr/spring/boot/testcontainers/service/connection/DaprContainerConnectionDetailsFactory.java
+++ b/dapr-spring/dapr-spring-boot-tests/src/main/java/io/dapr/spring/boot/testcontainers/service/connection/DaprContainerConnectionDetailsFactory.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.spring.boot.testcontainers.service.connection;
 
 import io.dapr.spring.boot.autoconfigure.client.DaprConnectionDetails;
diff --git a/dapr-spring/dapr-spring-data/src/main/java/io/dapr/spring/data/repository/query/DaprPredicate.java b/dapr-spring/dapr-spring-data/src/main/java/io/dapr/spring/data/repository/query/DaprPredicate.java
index 4676dbd7a..bf30a0b4f 100644
--- a/dapr-spring/dapr-spring-data/src/main/java/io/dapr/spring/data/repository/query/DaprPredicate.java
+++ b/dapr-spring/dapr-spring-data/src/main/java/io/dapr/spring/data/repository/query/DaprPredicate.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.spring.data.repository.query;
 
 import org.springframework.beans.BeanWrapper;
diff --git a/dapr-spring/dapr-spring-workflows/src/main/java/io/dapr/spring/workflows/config/DaprWorkflowsConfiguration.java b/dapr-spring/dapr-spring-workflows/src/main/java/io/dapr/spring/workflows/config/DaprWorkflowsConfiguration.java
index 18e402414..88e81906b 100644
--- a/dapr-spring/dapr-spring-workflows/src/main/java/io/dapr/spring/workflows/config/DaprWorkflowsConfiguration.java
+++ b/dapr-spring/dapr-spring-workflows/src/main/java/io/dapr/spring/workflows/config/DaprWorkflowsConfiguration.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.spring.workflows.config;
 
 import io.dapr.workflows.Workflow;
diff --git a/dapr-spring/dapr-spring-workflows/src/main/java/io/dapr/spring/workflows/config/EnableDaprWorkflows.java b/dapr-spring/dapr-spring-workflows/src/main/java/io/dapr/spring/workflows/config/EnableDaprWorkflows.java
index 33be64674..465a1b062 100644
--- a/dapr-spring/dapr-spring-workflows/src/main/java/io/dapr/spring/workflows/config/EnableDaprWorkflows.java
+++ b/dapr-spring/dapr-spring-workflows/src/main/java/io/dapr/spring/workflows/config/EnableDaprWorkflows.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.spring.workflows.config;
 
 import org.springframework.context.annotation.Import;
diff --git a/sdk/src/main/java/io/dapr/serializer/CustomizableObjectSerializer.java b/sdk/src/main/java/io/dapr/serializer/CustomizableObjectSerializer.java
index 1838815d6..24f18bffd 100644
--- a/sdk/src/main/java/io/dapr/serializer/CustomizableObjectSerializer.java
+++ b/sdk/src/main/java/io/dapr/serializer/CustomizableObjectSerializer.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.serializer;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
diff --git a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/ConfigurationSettings.java b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/ConfigurationSettings.java
index d9cf29224..6406ee0cc 100644
--- a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/ConfigurationSettings.java
+++ b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/ConfigurationSettings.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.testcontainers;
 
 // This is a marker interface, so we could get
diff --git a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/DaprContainerConstants.java b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/DaprContainerConstants.java
index 89bdb09b0..e4dbbf689 100644
--- a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/DaprContainerConstants.java
+++ b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/DaprContainerConstants.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.testcontainers;
 
 public interface DaprContainerConstants {
diff --git a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/HttpEndpoint.java b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/HttpEndpoint.java
index 482cac9a7..37687f925 100644
--- a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/HttpEndpoint.java
+++ b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/HttpEndpoint.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.testcontainers;
 
 public class HttpEndpoint {
diff --git a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/OtelTracingConfigurationSettings.java b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/OtelTracingConfigurationSettings.java
index 38d862c91..189c68266 100644
--- a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/OtelTracingConfigurationSettings.java
+++ b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/OtelTracingConfigurationSettings.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.testcontainers;
 
 /**
diff --git a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/ZipkinTracingConfigurationSettings.java b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/ZipkinTracingConfigurationSettings.java
index be95cb34d..f049c5ed2 100644
--- a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/ZipkinTracingConfigurationSettings.java
+++ b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/ZipkinTracingConfigurationSettings.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.testcontainers;
 
 /**
diff --git a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/ComponentYamlConverter.java b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/ComponentYamlConverter.java
index 586de01e4..1641d1f11 100644
--- a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/ComponentYamlConverter.java
+++ b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/ComponentYamlConverter.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.testcontainers.converter;
 
 import io.dapr.testcontainers.Component;
diff --git a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/ConfigurationYamlConverter.java b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/ConfigurationYamlConverter.java
index 1f8cbb6bd..005f0b50f 100644
--- a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/ConfigurationYamlConverter.java
+++ b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/ConfigurationYamlConverter.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.testcontainers.converter;
 
 import io.dapr.testcontainers.AppHttpPipeline;
diff --git a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/HttpEndpointYamlConverter.java b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/HttpEndpointYamlConverter.java
index db4a9cba4..de454acc7 100644
--- a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/HttpEndpointYamlConverter.java
+++ b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/HttpEndpointYamlConverter.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.testcontainers.converter;
 
 import io.dapr.testcontainers.HttpEndpoint;
diff --git a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/SubscriptionYamlConverter.java b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/SubscriptionYamlConverter.java
index 89f119ba0..18b74f9ef 100644
--- a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/SubscriptionYamlConverter.java
+++ b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/SubscriptionYamlConverter.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.testcontainers.converter;
 
 import io.dapr.testcontainers.Subscription;
diff --git a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/YamlConverter.java b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/YamlConverter.java
index 2326edc6b..34d72abf4 100644
--- a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/YamlConverter.java
+++ b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/YamlConverter.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.testcontainers.converter;
 
 public interface YamlConverter<T> {
diff --git a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/YamlMapperFactory.java b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/YamlMapperFactory.java
index 2af820f4a..f6d132121 100644
--- a/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/YamlMapperFactory.java
+++ b/testcontainers-dapr/src/main/java/io/dapr/testcontainers/converter/YamlMapperFactory.java
@@ -1,3 +1,16 @@
+/*
+ * Copyright 2021 The Dapr Authors
+ * 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.
+*/
+
 package io.dapr.testcontainers.converter;
 
 import io.dapr.testcontainers.ListEntry;