diff --git a/jcalendar-demo-testing-api/pom.xml b/jcalendar-demo-testing-api/pom.xml
index 6524abd..f8db78e 100644
--- a/jcalendar-demo-testing-api/pom.xml
+++ b/jcalendar-demo-testing-api/pom.xml
@@ -4,12 +4,11 @@
     <parent>
         <artifactId>jcalendar-swing</artifactId>
         <groupId>com.github.javatlacati</groupId>
-        <version>1.3.5</version>
+        <version>1.3.9</version>
     </parent>
 
     <groupId>com.github.javatlacati</groupId>
     <artifactId>jcalendar-demo-testing-api</artifactId>
-    <version>1.0-SNAPSHOT</version>
 
     <name>jcalendar-demo-testing-api</name>
     <!-- FIXME change it to the project's website -->
@@ -38,13 +37,13 @@
         <dependency>
             <groupId>com.github.javatlacati</groupId>
             <artifactId>jcalendar-demo</artifactId>
-            <version>1.3.5</version>
+            <version>1.3.9</version>
             <scope>compile</scope>
         </dependency>
         <dependency>
             <groupId>com.github.javatlacati</groupId>
             <artifactId>jcalendar</artifactId>
-            <version>1.3.5</version>
+            <version>1.3.9</version>
             <scope>compile</scope>
         </dependency>
     </dependencies>
diff --git a/jcalendar-demo-testing-api/src/test/java/com/toedter/calendar/demo/GUITest.java b/jcalendar-demo-testing-api/src/test/java/com/toedter/calendar/demo/GUITest.java
index 0e02ee8..ba0a3a4 100644
--- a/jcalendar-demo-testing-api/src/test/java/com/toedter/calendar/demo/GUITest.java
+++ b/jcalendar-demo-testing-api/src/test/java/com/toedter/calendar/demo/GUITest.java
@@ -61,7 +61,7 @@ public void checkAboutFromMenu() {
         Assert.assertEquals("Properties", demoPageObject.getTitleOfPropertiesPanel());
 
         demoPageObject.clickAboutMenu();
-        String version = "1.3.5";
+        String version = "1.3.9";
         String aboutText = new StringBuilder("JCalendar Demo\nVersion ")
                 .append(version)
                 .append("\nKai Toedter\nkai@toedter.com\nwww.toedter.com")
diff --git a/jcalendar-demo/pom.xml b/jcalendar-demo/pom.xml
index 90d5d23..a59b286 100644
--- a/jcalendar-demo/pom.xml
+++ b/jcalendar-demo/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>com.github.javatlacati</groupId>
         <artifactId>jcalendar-swing</artifactId>
-        <version>1.3.5</version>
+        <version>1.3.9</version>
     </parent>
 
     <properties>
@@ -22,7 +22,7 @@
         <dependency>
             <groupId>com.github.javatlacati</groupId>
             <artifactId>jcalendar</artifactId>
-            <version>1.3.5</version>
+            <version>1.3.9</version>
             <scope>compile</scope>
         </dependency>
         <dependency>
diff --git a/jcalendar-demo/src/main/java/com/toedter/calendar/demo/AboutAction.java b/jcalendar-demo/src/main/java/com/toedter/calendar/demo/AboutAction.java
index 75d7ed3..30f412b 100644
--- a/jcalendar-demo/src/main/java/com/toedter/calendar/demo/AboutAction.java
+++ b/jcalendar-demo/src/main/java/com/toedter/calendar/demo/AboutAction.java
@@ -30,7 +30,7 @@ public class AboutAction extends AbstractAction {
 
     private static final long serialVersionUID = -5204865941545323214L;
     private final JCalendarDemo demo;
-    private static final String VERSION = "1.3.5";
+    private static final String VERSION = "1.3.9";
     private static final String ABOUT_TEXT = new StringBuilder("JCalendar Demo\nVersion ").append(VERSION).append("\n\nKai Toedter\nkai@toedter.com\nwww.toedter.com").toString();
 
     /**
diff --git a/jcalendar/pom.xml b/jcalendar/pom.xml
index cbd762a..14bc58e 100644
--- a/jcalendar/pom.xml
+++ b/jcalendar/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>com.github.javatlacati</groupId>
         <artifactId>jcalendar-swing</artifactId>
-        <version>1.3.5</version>
+        <version>1.3.9</version>
     </parent>
     <artifactId>jcalendar</artifactId>
     <packaging>jar</packaging>
@@ -19,6 +19,12 @@
             <version>4.12</version>
             <scope>test</scope>
         </dependency>
+        <!-- <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>2.23.4</version>
+            <scope>test</scope>
+        </dependency> -->
     </dependencies>
 
     <build>
@@ -54,7 +60,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-enforcer-plugin</artifactId>
-                <version>1.0-beta-1</version>
+                <version>3.0.0-M3</version>
                 <executions>
                     <execution>
                         <id>enforce-java</id>
@@ -74,7 +80,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>2.2</version>
+                <version>3.2.0</version>
                 <configuration>
                     <archive>
                         <manifest>
@@ -165,7 +171,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-gpg-plugin</artifactId>
-                        <version>1.0-alpha-4</version>
+                        <version>1.5</version>
                         <executions>
                             <execution>
                                 <id>sign-artifacts</id>
diff --git a/pom.xml b/pom.xml
index 35b3054..fd2f646 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.github.javatlacati</groupId>
     <artifactId>jcalendar-swing</artifactId>
-    <version>1.3.5</version>
+    <version>1.3.9</version>
     <packaging>pom</packaging>
     <name>JCalendar swing</name>
     <description>The JCalendar Component - New Features and Bug Fixes</description>