diff --git a/biodata-external/pom.xml b/biodata-external/pom.xml
index 8fdc2eb2..c425be02 100644
--- a/biodata-external/pom.xml
+++ b/biodata-external/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <artifactId>biodata</artifactId>
         <groupId>org.opencb.biodata</groupId>
-        <version>3.3.0</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/biodata-formats/pom.xml b/biodata-formats/pom.xml
index c452b44b..e56df070 100644
--- a/biodata-formats/pom.xml
+++ b/biodata-formats/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.opencb.biodata</groupId>
         <artifactId>biodata</artifactId>
-        <version>3.3.0</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/biodata-models/pom.xml b/biodata-models/pom.xml
index ef5e48ad..9d6b4ef7 100644
--- a/biodata-models/pom.xml
+++ b/biodata-models/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.opencb.biodata</groupId>
         <artifactId>biodata</artifactId>
-        <version>3.3.0</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/biodata-tools/pom.xml b/biodata-tools/pom.xml
index 46818a58..8b5d54a4 100644
--- a/biodata-tools/pom.xml
+++ b/biodata-tools/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.opencb.biodata</groupId>
         <artifactId>biodata</artifactId>
-        <version>3.3.0</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/pom.xml b/pom.xml
index a6cc5f3b..0925a019 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
 
     <groupId>org.opencb.biodata</groupId>
     <artifactId>biodata</artifactId>
-    <version>3.3.0</version>
+    <version>4.0.0-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <name>Biodata</name>