diff --git a/cda-model/pom.xml b/cda-model/pom.xml
index a4daf97700a34d2c554416a15daab37ec7afa65e..f22defe38a6e24e7f9a9bcdcafa6f243a7b18e64 100644
--- a/cda-model/pom.xml
+++ b/cda-model/pom.xml
@@ -1,17 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <parent>
         <artifactId>uml-models</artifactId>
         <groupId>net.ihe.gazelle</groupId>
-        <version>3.0.0</version>
+        <version>3.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
     <groupId>net.ihe.gazelle.model</groupId>
     <artifactId>cda-model</artifactId>
-    <version>3.0.0</version>
+    <version>3.0.0-SNAPSHOT</version>
 
     <packaging>jar</packaging>
 
@@ -49,28 +51,28 @@
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>voc-model</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>common-models</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>nblock-model</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>datatypes-model</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
 
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>model-resources</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>commons-io</groupId>
diff --git a/cdaepsos-model/pom.xml b/cdaepsos-model/pom.xml
index 9be86cc6507c7bcfe15993cd3faa3e3f558d852f..b81b551dc8fa47f2d988fa23f4b43ca0c951d95b 100644
--- a/cdaepsos-model/pom.xml
+++ b/cdaepsos-model/pom.xml
@@ -1,17 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <parent>
         <artifactId>uml-models</artifactId>
         <groupId>net.ihe.gazelle</groupId>
-        <version>3.0.0</version>
+        <version>3.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
     <groupId>net.ihe.gazelle.model</groupId>
     <artifactId>cdaepsos-model</artifactId>
-    <version>3.0.0</version>
+    <version>3.0.0-SNAPSHOT</version>
 
     <packaging>jar</packaging>
     
@@ -38,33 +40,33 @@
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>voc-model</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>common-models</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>nblock-model</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>infr-model</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>datatypes-model</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
 
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>model-resources</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
 
 
diff --git a/common-models/pom.xml b/common-models/pom.xml
index 28eeb5633769c70aa8d4ceb83f99bd1735f37f30..814668ee19a0f995a611aa06e9582acb572bad94 100644
--- a/common-models/pom.xml
+++ b/common-models/pom.xml
@@ -1,17 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <parent>
         <artifactId>uml-models</artifactId>
         <groupId>net.ihe.gazelle</groupId>
-        <version>3.0.0</version>
+        <version>3.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
     <groupId>net.ihe.gazelle.model</groupId>
     <artifactId>common-models</artifactId>
-    <version>3.0.0</version>
+    <version>3.0.0-SNAPSHOT</version>
 
     <packaging>jar</packaging>
 	
@@ -37,7 +39,7 @@
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>model-resources</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
     </dependencies>
 </project>
diff --git a/datatypes-model/pom.xml b/datatypes-model/pom.xml
index 2a953735bbe745c236caea1e8e4f3216ef5a8fb7..c3acc1cdc1a78e3a9c941609e2f47f72b36cb509 100644
--- a/datatypes-model/pom.xml
+++ b/datatypes-model/pom.xml
@@ -1,17 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <parent>
         <artifactId>uml-models</artifactId>
         <groupId>net.ihe.gazelle</groupId>
-        <version>3.0.0</version>
+        <version>3.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
     <groupId>net.ihe.gazelle.model</groupId>
     <artifactId>datatypes-model</artifactId>
-    <version>3.0.0</version>
+    <version>3.0.0-SNAPSHOT</version>
 
     <packaging>jar</packaging>
 
@@ -37,13 +39,13 @@
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>common-models</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
 
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>model-resources</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
     </dependencies>
 </project>
\ No newline at end of file
diff --git a/infr-model/pom.xml b/infr-model/pom.xml
index e9b0f88e4a55e2ef84639dc40652484acadfad7e..e85e5613a8f57478b161e91623c6d1085a2cd424 100644
--- a/infr-model/pom.xml
+++ b/infr-model/pom.xml
@@ -1,17 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <parent>
         <artifactId>uml-models</artifactId>
         <groupId>net.ihe.gazelle</groupId>
-        <version>3.0.0</version>
+        <version>3.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
     <groupId>net.ihe.gazelle.model</groupId>
     <artifactId>infr-model</artifactId>
-    <version>3.0.0</version>
+    <version>3.0.0-SNAPSHOT</version>
 
     <packaging>jar</packaging>
 
@@ -36,13 +38,13 @@
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>datatypes-model</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
 
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>model-resources</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
     </dependencies>
 </project>
diff --git a/model-resources/pom.xml b/model-resources/pom.xml
index 9386115d95a0c0ed725b775da7a48d1c954987d5..56dc1283a06cc1d33244298c6968e64c470855ad 100644
--- a/model-resources/pom.xml
+++ b/model-resources/pom.xml
@@ -1,10 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <parent>
         <artifactId>uml-models</artifactId>
         <groupId>net.ihe.gazelle</groupId>
-        <version>3.0.0</version>
+        <version>3.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
@@ -12,7 +14,7 @@
 
     <groupId>net.ihe.gazelle.model</groupId>
     <artifactId>model-resources</artifactId>
-    <version>3.0.0</version>
+    <version>3.0.0-SNAPSHOT</version>
 
 
 
diff --git a/nblock-model/pom.xml b/nblock-model/pom.xml
index ad69f73d75d53513bfa585fd3e08ea44ca30156c..7f91b97369eab0881bf563fe57d795a4f5173bba 100644
--- a/nblock-model/pom.xml
+++ b/nblock-model/pom.xml
@@ -1,17 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <parent>
         <artifactId>uml-models</artifactId>
         <groupId>net.ihe.gazelle</groupId>
-        <version>3.0.0</version>
+        <version>3.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
     <groupId>net.ihe.gazelle.model</groupId>
     <artifactId>nblock-model</artifactId>
-    <version>3.0.0</version>
+    <version>3.0.0-SNAPSHOT</version>
 
     <packaging>jar</packaging>
 
@@ -36,7 +38,7 @@
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>model-resources</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
     </dependencies>
 </project>
diff --git a/pom.xml b/pom.xml
index 46aa47921da665616b288fc84b14e83898147d0c..df441d6bce0d21cc2e54afbb1ec57d4ed8ea202b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
     <groupId>net.ihe.gazelle</groupId>
     <artifactId>uml-models</artifactId>
     <name>UML Models</name>
-    <version>3.0.0</version>
+    <version>3.0.0-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <properties>
@@ -22,7 +22,7 @@
         <connection>scm:git:${git.project.url}</connection>
         <developerConnection>scm:git:${git.project.url}</developerConnection>
         <url>${git.project.url}</url>
-        <tag>3.0.0</tag>
+        <tag>HEAD</tag>
     </scm>
 
     <distributionManagement>
diff --git a/voc-model/pom.xml b/voc-model/pom.xml
index af50cd908e4df052e053d37a8594bc6bc115452f..57fdc580d1566bb4212f67ea9fd8d0ae76e92480 100644
--- a/voc-model/pom.xml
+++ b/voc-model/pom.xml
@@ -1,17 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <parent>
         <artifactId>uml-models</artifactId>
         <groupId>net.ihe.gazelle</groupId>
-        <version>3.0.0</version>
+        <version>3.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
     <groupId>net.ihe.gazelle.model</groupId>
     <artifactId>voc-model</artifactId>
-    <version>3.0.0</version>
+    <version>3.0.0-SNAPSHOT</version>
 
     <packaging>jar</packaging>
 
@@ -36,7 +38,7 @@
         <dependency>
             <groupId>net.ihe.gazelle.model</groupId>
             <artifactId>model-resources</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.0-SNAPSHOT</version>
         </dependency>
     </dependencies>
 </project>