diff --git a/README.md b/README.md
index af66861..1385358 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'io.github.llschall:ardwloop:0.3.8'
+    implementation 'io.github.llschall:ardwloop:0.3.9'
 }
 ```
 
diff --git a/ino/examples/demo_led/demo_led.ino b/ino/examples/demo_led/demo_led.ino
index 333cc60..8652d37 100644
--- a/ino/examples/demo_led/demo_led.ino
+++ b/ino/examples/demo_led/demo_led.ino
@@ -1,7 +1,7 @@
 /*
  * Welcome to the Ardwloop Demo !
  *
- * Featuring Ardwloop 0.3.9
+ * Featuring Ardwloop 0.4.0
  *
  * More setup instructions are available in
  * https://llschall.github.io/ardwloop/demo
diff --git a/ino/library.properties b/ino/library.properties
index 5b7a45b..e1ef853 100644
--- a/ino/library.properties
+++ b/ino/library.properties
@@ -1,5 +1,5 @@
 name=Ardwloop
-version=0.3.9
+version=0.4.0
 author=Laurent Schall <llschall@gmx.com>
 maintainer=Laurent Schall <llschall@gmx.com>
 sentence=A library to ease controlling an Arduino program from a Java or Kotlin application.
diff --git a/src/main/java/org/llschall/ardwloop/ArdwloopStarter.java b/src/main/java/org/llschall/ardwloop/ArdwloopStarter.java
index 634a2cd..45ca90f 100644
--- a/src/main/java/org/llschall/ardwloop/ArdwloopStarter.java
+++ b/src/main/java/org/llschall/ardwloop/ArdwloopStarter.java
@@ -23,7 +23,7 @@ public class ArdwloopStarter {
     /**
      * The version of the Ardwloop library
      */
-    public static final String VERSION = "0.3.9";
+    public static final String VERSION = "0.4.0";
 
     /**
      * An integer that might vary with the snapshot