diff --git a/plugin-sample/pom.xml b/plugin-sample/pom.xml
index 31cb596..fbc0aee 100644
--- a/plugin-sample/pom.xml
+++ b/plugin-sample/pom.xml
@@ -13,6 +13,10 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <maven-javadoc-plugin.version>2.10.4</maven-javadoc-plugin.version>
+        <maven-source-plugin.version>3.0.1</maven-source-plugin.version>
+        <maven-gpg-plugin.version>1.6</maven-gpg-plugin.version>
+        <maven-deploy-plugin.version>2.8.2</maven-deploy-plugin.version>
     </properties>
 
     <build>
@@ -30,6 +34,60 @@
                     </execution>
                 </executions>
             </plugin>
+            <!-- plugin sequence: javadoc, sources, gpg, deploy -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <version>${maven-javadoc-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <id>attach-javadocs</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin><!-- maven-javadoc-plugin -->
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-source-plugin</artifactId>
+                <version>${maven-source-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <id>attach-sources</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>jar-no-fork</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin><!-- maven-source-plugin -->
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-gpg-plugin</artifactId>
+                <version>${maven-gpg-plugin.version}</version>
+                <configuration>
+                    <passphrase>${gpg.passphrase}</passphrase>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>sign-artifacts</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>sign</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin><!-- maven-gpg-plugin -->
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-deploy-plugin</artifactId>
+                <version>${maven-deploy-plugin.version}</version>
+            </plugin><!-- maven deploy-plugin -->
         </plugins>
     </build>
 
diff --git a/plugin/pom.xml b/plugin/pom.xml
index 10bb732..f1d61ea 100644
--- a/plugin/pom.xml
+++ b/plugin/pom.xml
@@ -23,6 +23,10 @@
         <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
         <maven-plugin-plugin.version>3.5</maven-plugin-plugin.version>
         <maven-plugin-annotations.version>3.5</maven-plugin-annotations.version>
+        <maven-javadoc-plugin.version>2.10.4</maven-javadoc-plugin.version>
+        <maven-source-plugin.version>3.0.1</maven-source-plugin.version>
+        <maven-gpg-plugin.version>1.6</maven-gpg-plugin.version>
+        <maven-deploy-plugin.version>2.8.2</maven-deploy-plugin.version>
         <mojo-executor.version>2.2.0</mojo-executor.version>
         <lombok.version>1.16.12</lombok.version>
         <map-builder.version>1.0.0</map-builder.version>
@@ -92,6 +96,60 @@
                     <target>1.8</target>
                 </configuration>
             </plugin><!-- maven-compiler-plugin -->
+            <!-- plugin sequence: javadoc, sources, gpg, deploy -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <version>${maven-javadoc-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <id>attach-javadocs</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin><!-- maven-javadoc-plugin -->
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-source-plugin</artifactId>
+                <version>${maven-source-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <id>attach-sources</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>jar-no-fork</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin><!-- maven-source-plugin -->
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-gpg-plugin</artifactId>
+                <version>${maven-gpg-plugin.version}</version>
+                <configuration>
+                    <passphrase>${gpg.passphrase}</passphrase>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>sign-artifacts</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>sign</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin><!-- maven-gpg-plugin -->
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-deploy-plugin</artifactId>
+                <version>${maven-deploy-plugin.version}</version>
+            </plugin><!-- maven deploy-plugin -->
         </plugins>
     </build>
     <pluginRepositories>
diff --git a/pom.xml b/pom.xml
index e9ee55a..90a9bc6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,6 +15,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <maven-gpg-plugin.version>1.6</maven-gpg-plugin.version>
     </properties>
 
     <modules>
@@ -59,6 +60,28 @@
         </developer>
     </developers>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-gpg-plugin</artifactId>
+                <version>${maven-gpg-plugin.version}</version>
+                <configuration>
+                    <passphrase>${gpg.passphrase}</passphrase>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>sign-artifacts</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>sign</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin><!-- maven-gpg-plugin -->
+        </plugins>
+    </build>
+
     <distributionManagement>
         <snapshotRepository>
             <id>sonatype-nexus-snapshots</id>