diff --git a/build.gradle b/build.gradle
index 48c169e564..bdf2c99921 100644
--- a/build.gradle
+++ b/build.gradle
@@ -100,7 +100,7 @@ allprojects {
 //    apply plugin: 'eclipse'
     apply plugin: 'idea'
 
-    version = '5.2.5'
+    version = '5.2.6-SNAPSHOT'
 }
 
 /**
diff --git a/build.xml b/build.xml
index 3737d8d663..7bcd18f99d 100644
--- a/build.xml
+++ b/build.xml
@@ -42,7 +42,7 @@ under the License.
 
     <description>The Apache POI project Ant build.</description>
 
-    <property name="version.id" value="5.2.5"/>
+    <property name="version.id" value="5.2.6-SNAPSHOT"/>
     <property name="release.rc" value=""/>
 
     <property environment="env"/>
diff --git a/osgi/pom.xml b/osgi/pom.xml
index 76464722d9..b912a60163 100644
--- a/osgi/pom.xml
+++ b/osgi/pom.xml
@@ -24,12 +24,12 @@
     <groupId>org.apache.poi</groupId>
     <artifactId>poi-bundle</artifactId>
     <packaging>bundle</packaging>
-    <version>5.2.5</version>
+    <version>5.2.6-SNAPSHOT</version>
 
     <name>Apache POI OSGi bundle</name>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <poi.version>5.2.5</poi.version>
+        <poi.version>5.2.6-SNAPSHOT</poi.version>
         <pax.exam.version>4.12.0</pax.exam.version>
     </properties>