diff --git a/neo4j-utils/pom.xml b/neo4j-utils/pom.xml
index 5d6dc21..42eb5d1 100644
--- a/neo4j-utils/pom.xml
+++ b/neo4j-utils/pom.xml
@@ -3,7 +3,7 @@
   <parent>
     <groupId>uk.ac.rothamsted.kg</groupId>
     <artifactId>rdf2pg-pom</artifactId>
-    <version>4.0.1-SNAPSHOT</version>
+    <version>4.0</version>
   </parent>
 
 
diff --git a/pom.xml b/pom.xml
index 89c22ff..ba252fc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -16,7 +16,7 @@
   <artifactId>rdf2pg-pom</artifactId>
   <packaging>pom</packaging>
   
-  <version>4.0.1-SNAPSHOT</version>
+  <version>4.0</version>
   
   <name>rdf2pg-pom - top POM</name>
   <url>https://github.com/Rothamsted/rdf2pg</url>
diff --git a/rdf2graphml-cli/pom.xml b/rdf2graphml-cli/pom.xml
index a4272df..ff407f5 100644
--- a/rdf2graphml-cli/pom.xml
+++ b/rdf2graphml-cli/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
     <artifactId>rdf2pg-pom</artifactId>
     <groupId>uk.ac.rothamsted.kg</groupId>
-    <version>4.0.1-SNAPSHOT</version>
+    <version>4.0</version>
   </parent>
   
 	<artifactId>rdf2graphml-cli</artifactId>
diff --git a/rdf2graphml/pom.xml b/rdf2graphml/pom.xml
index 4f47318..1c88477 100644
--- a/rdf2graphml/pom.xml
+++ b/rdf2graphml/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>uk.ac.rothamsted.kg</groupId>
     <artifactId>rdf2pg-pom</artifactId>
-    <version>4.0.1-SNAPSHOT</version>
+    <version>4.0</version>
   </parent>
   
   <artifactId>rdf2graphml</artifactId>
diff --git a/rdf2neo-cli/pom.xml b/rdf2neo-cli/pom.xml
index e5f03d2..8977fb7 100644
--- a/rdf2neo-cli/pom.xml
+++ b/rdf2neo-cli/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
     <artifactId>rdf2pg-pom</artifactId>
     <groupId>uk.ac.rothamsted.kg</groupId>
-    <version>4.0.1-SNAPSHOT</version>
+    <version>4.0</version>
   </parent>
   
 	<artifactId>rdf2neo-cli</artifactId>
diff --git a/rdf2neo/pom.xml b/rdf2neo/pom.xml
index 7cf7959..b60dc27 100644
--- a/rdf2neo/pom.xml
+++ b/rdf2neo/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>uk.ac.rothamsted.kg</groupId>
     <artifactId>rdf2pg-pom</artifactId>
-    <version>4.0.1-SNAPSHOT</version>
+    <version>4.0</version>
   </parent>
   
   <artifactId>rdf2neo</artifactId>
diff --git a/rdf2pg-core-cli/pom.xml b/rdf2pg-core-cli/pom.xml
index dab92e4..9187d09 100644
--- a/rdf2pg-core-cli/pom.xml
+++ b/rdf2pg-core-cli/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
     <artifactId>rdf2pg-pom</artifactId>
     <groupId>uk.ac.rothamsted.kg</groupId>
-    <version>4.0.1-SNAPSHOT</version>
+    <version>4.0</version>
   </parent>
   
 	<artifactId>rdf2pg-core-cli</artifactId>
diff --git a/rdf2pg-core/pom.xml b/rdf2pg-core/pom.xml
index 73ce97b..8ae0585 100644
--- a/rdf2pg-core/pom.xml
+++ b/rdf2pg-core/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>uk.ac.rothamsted.kg</groupId>
     <artifactId>rdf2pg-pom</artifactId>
-    <version>4.0.1-SNAPSHOT</version>
+    <version>4.0</version>
   </parent>
   
   <artifactId>rdf2pg-core</artifactId>