diff --git a/build.gradle b/build.gradle
index cf301c62bf..145c00b6e5 100644
--- a/build.gradle
+++ b/build.gradle
@@ -89,7 +89,7 @@ allprojects {
 //    apply plugin: 'eclipse'
     apply plugin: 'idea'
 
-    version = '5.5.1-SNAPSHOT'
+    version = '5.5.1'
 }
 
 /**
diff --git a/build.xml b/build.xml
index 77e2439fcc..eee7febfae 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="5.5.1-SNAPSHOT"/>
+    <property name="version.id" value="5.5.1"/>
     <property name="release.rc" value=""/>
 
     <property environment="env"/>
diff --git a/osgi/pom.xml b/osgi/pom.xml
index 30e5f1c258..41592b43b9 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>5.5.1-SNAPSHOT</version>
+    <version>5.5.1</version>
 
     <name>Apache POI OSGi bundle</name>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <poi.version>5.5.1-SNAPSHOT</poi.version>
+        <poi.version>5.5.1</poi.version>
         <pax.exam.version>4.14.0</pax.exam.version>
     </properties>