diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1768f2ff..96b6c600 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,10 +15,15 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+
     - name: Set up JDK 11
       uses: actions/setup-java@v2
       with:
         java-version: '11'
         distribution: 'adopt'
+
+    - name: Validate code format
+      run: mvn spotless:check
+
     - name: Build with Maven
       run: mvn -B package --file pom.xml
diff --git a/README.md b/README.md
index 4d0a54e0..67c9cd4d 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,15 @@ public class PushOneDocument {
 
 ```
 
+## Local Setup to Contribute
+
+### Formatting
+
+This project uses [Google Java Format](https://github.com/google/google-java-format), so make sure your code is properly formatted before opening a pull request.
+```bash
+mvn spotless:apply
+```
+
 ## Release
 
 * Tag the commit following semver.
diff --git a/pom.xml b/pom.xml
index 142e7175..9c4183c9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -49,26 +49,50 @@
         </repository>
     </distributionManagement>
 
+    <build>
+        <plugins>
+            <!-- Allows generating JAR files containing sources -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-source-plugin</artifactId>
+                <version>3.0.0</version>
+                <configuration />
+                <executions>
+                    <execution>
+                        <id>attach-sources</id>
+                        <goals>
+                            <goal>jar-no-fork</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+
+            <!-- Format code -->
+            <plugin>
+                <groupId>com.diffplug.spotless</groupId>
+                <artifactId>spotless-maven-plugin</artifactId>
+                <version>${spotless.version}</version>
+                <configuration>
+                    <java>
+                        <includes>
+                            <include>src/main/java/**/*.java</include>
+                            <include>src/test/java/**/*.java</include>
+                        </includes>
+
+                        <googleJavaFormat />
+
+                    </java>
+                </configuration>
+            </plugin>
+
+        </plugins>
+    </build>
+
     <profiles>
         <profile>
             <id>release</id>
             <build>
                 <plugins>
-                    <plugin>
-                        <groupId>org.apache.maven.plugins</groupId>
-                        <artifactId>maven-source-plugin</artifactId>
-                        <version>3.0.0</version>
-                        <configuration>
-                        </configuration>
-                        <executions>
-                            <execution>
-                                <id>attach-sources</id>
-                                <goals>
-                                    <goal>jar-no-fork</goal>
-                                </goals>
-                            </execution>
-                        </executions>
-                    </plugin>
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-javadoc-plugin</artifactId>
@@ -169,5 +193,6 @@
         <maven.compiler.source>11</maven.compiler.source>
         <maven.compiler.target>11</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <spotless.version>2.37.0</spotless.version>
     </properties>
 </project>
\ No newline at end of file