PROTON-1250: Restore snapshot versions
diff --git a/examples/engine/java/pom.xml b/examples/engine/java/pom.xml
index e821923..3cd1686 100644
--- a/examples/engine/java/pom.xml
+++ b/examples/engine/java/pom.xml
@@ -19,7 +19,7 @@
   <parent>
     <groupId>org.apache.qpid</groupId>
     <artifactId>proton-project</artifactId>
-    <version>0.13.1</version>
+    <version>0.13.1-SNAPSHOT</version>
     <relativePath>../../../pom.xml</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/examples/java/messenger/pom.xml b/examples/java/messenger/pom.xml
index 93bc6f48..59928d8 100644
--- a/examples/java/messenger/pom.xml
+++ b/examples/java/messenger/pom.xml
@@ -19,7 +19,7 @@
   <parent>
     <groupId>org.apache.qpid</groupId>
     <artifactId>proton-project</artifactId>
-    <version>0.13.1</version>
+    <version>0.13.1-SNAPSHOT</version>
     <relativePath>../../..</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/examples/java/reactor/pom.xml b/examples/java/reactor/pom.xml
index 351bb64..1db815a 100644
--- a/examples/java/reactor/pom.xml
+++ b/examples/java/reactor/pom.xml
@@ -19,7 +19,7 @@
   <parent>
     <groupId>org.apache.qpid</groupId>
     <artifactId>proton-project</artifactId>
-    <version>0.13.1</version>
+    <version>0.13.1-SNAPSHOT</version>
     <relativePath>../../..</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/pom.xml b/pom.xml
index 77335dd..356abbf 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
 
   <groupId>org.apache.qpid</groupId>
   <artifactId>proton-project</artifactId>
-  <version>0.13.1</version>
+  <version>0.13.1-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <properties>
diff --git a/proton-j/pom.xml b/proton-j/pom.xml
index 060d8fe..0dab0a4 100644
--- a/proton-j/pom.xml
+++ b/proton-j/pom.xml
@@ -19,7 +19,7 @@
   <parent>
     <groupId>org.apache.qpid</groupId>
     <artifactId>proton-project</artifactId>
-    <version>0.13.1</version>
+    <version>0.13.1-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
diff --git a/tests/pom.xml b/tests/pom.xml
index bef71bd..dca40eb 100644
--- a/tests/pom.xml
+++ b/tests/pom.xml
@@ -27,7 +27,7 @@
   <parent>
     <groupId>org.apache.qpid</groupId>
     <artifactId>proton-project</artifactId>
-    <version>0.13.1</version>
+    <version>0.13.1-SNAPSHOT</version>
   </parent>
 
   <description>The Proton python system tests execute against the Java or C implementation, using Maven (via this pom) and CMake/CTest respectively.
diff --git a/version.txt b/version.txt
index c317a91..72824bc 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-0.13.1
+0.13.1-SNAPSHOT