diff --git a/pom.xml b/pom.xml
index e795778..b603624 100644
--- a/pom.xml
+++ b/pom.xml
@@ -24,7 +24,7 @@
 	</parent>
 	<groupId>org.apache.taverna.language</groupId>
 	<artifactId>taverna-language</artifactId>
-	<version>0.15.0-incubating-SNAPSHOT</version>
+	<version>0.15.0-incubating</version>
 	<packaging>pom</packaging>
 
 	<name>Apache Taverna Language APIs (Scufl2, Databundle)</name>
@@ -175,7 +175,7 @@
 		<connection>scm:git:https://git-wip-us.apache.org/repos/asf/incubator-taverna-language.git</connection>
 		<developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/incubator-taverna-language.git</developerConnection>
 		<url>https://github.com/apache/incubator-taverna-language</url>
-		<tag>HEAD</tag>
+		<tag>0.15.0-incubating-RC4</tag>
 	</scm>
 
   <repositories>
diff --git a/taverna-baclava-language/pom.xml b/taverna-baclava-language/pom.xml
index bc3939a..6cf19f8 100644
--- a/taverna-baclava-language/pom.xml
+++ b/taverna-baclava-language/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.taverna.language</groupId>
 		<artifactId>taverna-language</artifactId>
-		<version>0.15.0-incubating-SNAPSHOT</version>
+		<version>0.15.0-incubating</version>
 	</parent>
   <artifactId>taverna-baclava-language</artifactId>
   <name>Apache Taverna Baclava support</name>
diff --git a/taverna-databundle/pom.xml b/taverna-databundle/pom.xml
index f56a4e0..058cdf2 100644
--- a/taverna-databundle/pom.xml
+++ b/taverna-databundle/pom.xml
@@ -20,7 +20,7 @@
     <parent>
       	<groupId>org.apache.taverna.language</groupId>
       	<artifactId>taverna-language</artifactId>
-      	<version>0.15.0-incubating-SNAPSHOT</version>
+      	<version>0.15.0-incubating</version>
     </parent>
     <artifactId>taverna-databundle</artifactId>
     <name>Apache Taverna Databundle API</name>
diff --git a/taverna-robundle/pom.xml b/taverna-robundle/pom.xml
index 410948a..d9fb963 100644
--- a/taverna-robundle/pom.xml
+++ b/taverna-robundle/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<groupId>org.apache.taverna.language</groupId>
 		<artifactId>taverna-language</artifactId>
-		<version>0.15.0-incubating-SNAPSHOT</version>
+		<version>0.15.0-incubating</version>
 	</parent>
 	<artifactId>taverna-robundle</artifactId>
 	<name>Apache Taverna RO Bundle API</name>
diff --git a/taverna-scufl2-annotation/pom.xml b/taverna-scufl2-annotation/pom.xml
index f35f214..49d2c60 100644
--- a/taverna-scufl2-annotation/pom.xml
+++ b/taverna-scufl2-annotation/pom.xml
@@ -20,7 +20,7 @@
 	<parent>
 		<groupId>org.apache.taverna.language</groupId>
 		<artifactId>taverna-language</artifactId>
-		<version>0.15.0-incubating-SNAPSHOT</version>
+		<version>0.15.0-incubating</version>
 	</parent>
 	<artifactId>taverna-scufl2-annotation</artifactId>
 	<name>Apache Taverna Scufl 2 annotations</name>
diff --git a/taverna-scufl2-api/pom.xml b/taverna-scufl2-api/pom.xml
index d272caa..85e1f70 100644
--- a/taverna-scufl2-api/pom.xml
+++ b/taverna-scufl2-api/pom.xml
@@ -20,7 +20,7 @@
 	<parent>
 		<groupId>org.apache.taverna.language</groupId>
 		<artifactId>taverna-language</artifactId>
-		<version>0.15.0-incubating-SNAPSHOT</version>
+		<version>0.15.0-incubating</version>
 	</parent>
 	<artifactId>taverna-scufl2-api</artifactId>
 	<packaging>bundle</packaging>
diff --git a/taverna-scufl2-examples/pom.xml b/taverna-scufl2-examples/pom.xml
index 807a516..cc011df 100644
--- a/taverna-scufl2-examples/pom.xml
+++ b/taverna-scufl2-examples/pom.xml
@@ -20,7 +20,7 @@
 	<parent>
 		<groupId>org.apache.taverna.language</groupId>
 		<artifactId>taverna-language</artifactId>
-		<version>0.15.0-incubating-SNAPSHOT</version>
+		<version>0.15.0-incubating</version>
 	</parent>
 	<artifactId>taverna-scufl2-examples</artifactId>
 	<name>Apache Taverna Scufl 2 examples</name>
diff --git a/taverna-scufl2-integration-tests/pom.xml b/taverna-scufl2-integration-tests/pom.xml
index 7ef587c..ecb26ff 100644
--- a/taverna-scufl2-integration-tests/pom.xml
+++ b/taverna-scufl2-integration-tests/pom.xml
@@ -20,7 +20,7 @@
 	<parent>
 		<groupId>org.apache.taverna.language</groupId>
 		<artifactId>taverna-language</artifactId>
-		<version>0.15.0-incubating-SNAPSHOT</version>
+		<version>0.15.0-incubating</version>
 	</parent>
 	<artifactId>taverna-scufl2-integration-tests</artifactId>
 	<name>Apache Taverna Scufl 2 integration tests</name>
diff --git a/taverna-scufl2-schemas/pom.xml b/taverna-scufl2-schemas/pom.xml
index e9dc57c..b69088b 100644
--- a/taverna-scufl2-schemas/pom.xml
+++ b/taverna-scufl2-schemas/pom.xml
@@ -20,7 +20,7 @@
 	<parent>
 		<groupId>org.apache.taverna.language</groupId>
 		<artifactId>taverna-language</artifactId>
-		<version>0.15.0-incubating-SNAPSHOT</version>
+		<version>0.15.0-incubating</version>
 	</parent>
 	<artifactId>taverna-scufl2-schemas</artifactId>
 	<packaging>bundle</packaging>
diff --git a/taverna-scufl2-scufl/pom.xml b/taverna-scufl2-scufl/pom.xml
index bb8141b..0e64a1f 100644
--- a/taverna-scufl2-scufl/pom.xml
+++ b/taverna-scufl2-scufl/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>org.apache.taverna.language</groupId>
     <artifactId>taverna-language</artifactId>
-    <version>0.15.0-incubating-SNAPSHOT</version>
+    <version>0.15.0-incubating</version>
   </parent>
   <artifactId>taverna-scufl2-scufl</artifactId>
   <packaging>bundle</packaging>
diff --git a/taverna-scufl2-t2flow/pom.xml b/taverna-scufl2-t2flow/pom.xml
index 7818612..a5f0f81 100644
--- a/taverna-scufl2-t2flow/pom.xml
+++ b/taverna-scufl2-t2flow/pom.xml
@@ -20,7 +20,7 @@
 	<parent>
 		<groupId>org.apache.taverna.language</groupId>
 		<artifactId>taverna-language</artifactId>
-		<version>0.15.0-incubating-SNAPSHOT</version>
+		<version>0.15.0-incubating</version>
 	</parent>
 	<artifactId>taverna-scufl2-t2flow</artifactId>
 	<packaging>bundle</packaging>
diff --git a/taverna-scufl2-ucfpackage/pom.xml b/taverna-scufl2-ucfpackage/pom.xml
index eae7e39..b69fbfb 100644
--- a/taverna-scufl2-ucfpackage/pom.xml
+++ b/taverna-scufl2-ucfpackage/pom.xml
@@ -20,7 +20,7 @@
 	<parent>
 		<groupId>org.apache.taverna.language</groupId>
 		<artifactId>taverna-language</artifactId>
-		<version>0.15.0-incubating-SNAPSHOT</version>
+		<version>0.15.0-incubating</version>
 	</parent>
 	<artifactId>taverna-scufl2-ucfpackage</artifactId>
 	<packaging>bundle</packaging>
diff --git a/taverna-scufl2-wfbundle/pom.xml b/taverna-scufl2-wfbundle/pom.xml
index 9cfc73d..f146450 100644
--- a/taverna-scufl2-wfbundle/pom.xml
+++ b/taverna-scufl2-wfbundle/pom.xml
@@ -20,7 +20,7 @@
 	<parent>
 		<groupId>org.apache.taverna.language</groupId>
 		<artifactId>taverna-language</artifactId>
-		<version>0.15.0-incubating-SNAPSHOT</version>
+		<version>0.15.0-incubating</version>
 	</parent>
 	<artifactId>taverna-scufl2-wfbundle</artifactId>
 	<packaging>bundle</packaging>