changed version to 3.1.0-SNAPSHOT

Signed-off-by: Igor Fedorenko <ifedorenko@apache.org>
diff --git a/maven-plugin-testing-harness/pom.xml b/maven-plugin-testing-harness/pom.xml
index 94d72b8..7aa51af 100644
--- a/maven-plugin-testing-harness/pom.xml
+++ b/maven-plugin-testing-harness/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.maven.plugin-testing</groupId>
     <artifactId>maven-plugin-testing</artifactId>
-    <version>3.0.1-SNAPSHOT</version>
+    <version>3.1.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>maven-plugin-testing-harness</artifactId>
diff --git a/maven-plugin-testing-tools/pom.xml b/maven-plugin-testing-tools/pom.xml
index 4b94401..a6fde2c 100644
--- a/maven-plugin-testing-tools/pom.xml
+++ b/maven-plugin-testing-tools/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.maven.plugin-testing</groupId>
     <artifactId>maven-plugin-testing</artifactId>
-    <version>3.0.1-SNAPSHOT</version>
+    <version>3.1.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>maven-plugin-testing-tools</artifactId>
diff --git a/maven-test-tools/pom.xml b/maven-test-tools/pom.xml
index 569150e..20a63e9 100644
--- a/maven-test-tools/pom.xml
+++ b/maven-test-tools/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.maven.plugin-testing</groupId>
     <artifactId>maven-plugin-testing</artifactId>
-    <version>3.0.1-SNAPSHOT</version>
+    <version>3.1.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>maven-test-tools</artifactId>
diff --git a/pom.xml b/pom.xml
index 704e691..3779c3a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -31,7 +31,7 @@
 
   <groupId>org.apache.maven.plugin-testing</groupId>
   <artifactId>maven-plugin-testing</artifactId>
-  <version>3.0.1-SNAPSHOT</version>
+  <version>3.1.0-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>Maven Plugin Testing</name>