diff --git a/build.xml b/build.xml
index 7f7fbbaaea..edc2574850 100644
--- a/build.xml
+++ b/build.xml
@@ -40,7 +40,7 @@ under the License.
 
     <description>The Apache POI project Ant build.</description>
 
-    <property name="version.id" value="3.15-beta1"/>
+    <property name="version.id" value="3.15-beta2"/>
     <property name="release.rc" value="RC1"/>
 
     <property environment="env"/>
diff --git a/sonar/examples/pom.xml b/sonar/examples/pom.xml
index 5a04f8d161..a6df70a861 100644
--- a/sonar/examples/pom.xml
+++ b/sonar/examples/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.apache.poi</groupId>
         <artifactId>poi-parent</artifactId>
-        <version>3.16-beta2-SNAPSHOT</version>
+        <version>3.15-beta2-SNAPSHOT</version>
     </parent>
     <artifactId>poi-examples</artifactId>
     <packaging>jar</packaging>
diff --git a/sonar/excelant/pom.xml b/sonar/excelant/pom.xml
index 3aaf8eae32..288e877071 100644
--- a/sonar/excelant/pom.xml
+++ b/sonar/excelant/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.apache.poi</groupId>
         <artifactId>poi-parent</artifactId>
-        <version>3.16-beta2-SNAPSHOT</version>
+        <version>3.15-beta2-SNAPSHOT</version>
     </parent>
     <artifactId>poi-excelant</artifactId>
     <packaging>jar</packaging>
diff --git a/sonar/main/pom.xml b/sonar/main/pom.xml
index f3e05f2f2a..2c974b573a 100644
--- a/sonar/main/pom.xml
+++ b/sonar/main/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.apache.poi</groupId>
         <artifactId>poi-parent</artifactId>
-        <version>3.16-beta2-SNAPSHOT</version>
+        <version>3.15-beta2-SNAPSHOT</version>
     </parent>
     <artifactId>poi-main</artifactId>
     <packaging>jar</packaging>
diff --git a/sonar/ooxml-schema-encryption/pom.xml b/sonar/ooxml-schema-encryption/pom.xml
index e21fce2b3f..bbeba00aae 100644
--- a/sonar/ooxml-schema-encryption/pom.xml
+++ b/sonar/ooxml-schema-encryption/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.apache.poi</groupId>
         <artifactId>poi-parent</artifactId>
-        <version>3.16-beta2-SNAPSHOT</version>
+        <version>3.15-beta2-SNAPSHOT</version>
         <relativePath>..</relativePath>
     </parent>
     <artifactId>poi-ooxml-schema-encryption</artifactId>
diff --git a/sonar/ooxml-schema-security/pom.xml b/sonar/ooxml-schema-security/pom.xml
index 542ea9e34a..cade8c30fe 100644
--- a/sonar/ooxml-schema-security/pom.xml
+++ b/sonar/ooxml-schema-security/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.apache.poi</groupId>
         <artifactId>poi-parent</artifactId>
-        <version>3.16-beta2-SNAPSHOT</version>
+        <version>3.15-beta2-SNAPSHOT</version>
         <relativePath>..</relativePath>
     </parent>
     <artifactId>poi-ooxml-schema-security</artifactId>
diff --git a/sonar/ooxml-schema/pom.xml b/sonar/ooxml-schema/pom.xml
index 66ad1cbe25..cad8912c3a 100644
--- a/sonar/ooxml-schema/pom.xml
+++ b/sonar/ooxml-schema/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.apache.poi</groupId>
         <artifactId>poi-parent</artifactId>
-        <version>3.16-beta2-SNAPSHOT</version>
+        <version>3.15-beta2-SNAPSHOT</version>
         <relativePath>..</relativePath>
     </parent>
     <artifactId>poi-ooxml-schema</artifactId>
diff --git a/sonar/ooxml/pom.xml b/sonar/ooxml/pom.xml
index c5f0adaf02..d64de91482 100644
--- a/sonar/ooxml/pom.xml
+++ b/sonar/ooxml/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.apache.poi</groupId>
         <artifactId>poi-parent</artifactId>
-        <version>3.16-beta2-SNAPSHOT</version>
+        <version>3.15-beta2-SNAPSHOT</version>
     </parent>
     <artifactId>poi-ooxml</artifactId>
     <packaging>jar</packaging>
diff --git a/sonar/pom.xml b/sonar/pom.xml
index a1a0da1201..73119e2c40 100644
--- a/sonar/pom.xml
+++ b/sonar/pom.xml
@@ -3,7 +3,7 @@
 	<groupId>org.apache.poi</groupId>
 	<artifactId>poi-parent</artifactId>
 	<packaging>pom</packaging>
-	<version>3.16-beta2-SNAPSHOT</version>
+	<version>3.15-beta2-SNAPSHOT</version>
 	<name>Apache POI - the Java API for Microsoft Documents</name>
 	<description>Maven build of Apache POI for Sonar checks</description>
 	<url>http://poi.apache.org/</url>
diff --git a/sonar/scratchpad/pom.xml b/sonar/scratchpad/pom.xml
index 2645cdca92..f476313bd0 100644
--- a/sonar/scratchpad/pom.xml
+++ b/sonar/scratchpad/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.apache.poi</groupId>
         <artifactId>poi-parent</artifactId>
-        <version>3.16-beta2-SNAPSHOT</version>
+        <version>3.15-beta2-SNAPSHOT</version>
     </parent>
     <artifactId>poi-scratchpad</artifactId>
     <packaging>jar</packaging>