diff --git a/main/core/pom.xml b/main/core/pom.xml
index 8d9e47899..5145737aa 100644
--- a/main/core/pom.xml
+++ b/main/core/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.cryptomator</groupId>
 		<artifactId>main</artifactId>
-		<version>0.3.0-SNAPSHOT</version>
+		<version>0.4.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>core</artifactId>
 	<name>Cryptomator core I/O module</name>
diff --git a/main/crypto-aes/pom.xml b/main/crypto-aes/pom.xml
index 28353ef82..bedaf1888 100644
--- a/main/crypto-aes/pom.xml
+++ b/main/crypto-aes/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.cryptomator</groupId>
 		<artifactId>main</artifactId>
-		<version>0.3.0-SNAPSHOT</version>
+		<version>0.4.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>crypto-aes</artifactId>
 	<name>Cryptomator cryptographic module (AES)</name>
diff --git a/main/crypto-api/pom.xml b/main/crypto-api/pom.xml
index c343b8fd9..e80049307 100644
--- a/main/crypto-api/pom.xml
+++ b/main/crypto-api/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.cryptomator</groupId>
 		<artifactId>main</artifactId>
-		<version>0.3.0-SNAPSHOT</version>
+		<version>0.4.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>crypto-api</artifactId>
 	<name>Cryptomator cryptographic module API</name>
diff --git a/main/pom.xml b/main/pom.xml
index 54a3a6934..51166a4bc 100644
--- a/main/pom.xml
+++ b/main/pom.xml
@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.cryptomator</groupId>
 	<artifactId>main</artifactId>
-	<version>0.3.0-SNAPSHOT</version>
+	<version>0.4.0-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>Cryptomator</name>
 
diff --git a/main/ui/pom.xml b/main/ui/pom.xml
index b5b50bc6e..ddda5e293 100644
--- a/main/ui/pom.xml
+++ b/main/ui/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.cryptomator</groupId>
 		<artifactId>main</artifactId>
-		<version>0.3.0-SNAPSHOT</version>
+		<version>0.4.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>ui</artifactId>
 	<name>Cryptomator GUI</name>