diff --git a/ome-xml/pom.xml b/ome-xml/pom.xml
index a394331ae..297eab09f 100644
--- a/ome-xml/pom.xml
+++ b/ome-xml/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>org.openmicroscopy</groupId>
     <artifactId>ome-model</artifactId>
-    <version>6.3.7-SNAPSHOT</version>
+    <version>6.4.0</version>
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/ome_model/experimental.py b/ome_model/experimental.py
index aacf55107..82b0796c4 100644
--- a/ome_model/experimental.py
+++ b/ome_model/experimental.py
@@ -27,7 +27,7 @@
 TIFF_PARSER = re.compile(TIFF_PARSER)
 
 warnings.warn(
-    "This module is deprecated as of ome-model 6.3.7. "
+    "This module is deprecated as of ome-model 6.4.0. "
     "Use other libraries such as ome-types to generate and validate "
     "OME-XML.", DeprecationWarning)
 
diff --git a/pom.xml b/pom.xml
index 67c6d9c6b..87a00d046 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
 
   <groupId>org.openmicroscopy</groupId>
   <artifactId>ome-model</artifactId>
-  <version>6.3.7-SNAPSHOT</version>
+  <version>6.4.0</version>
   <packaging>pom</packaging>
 
   <name>OME Model</name>
diff --git a/specification/pom.xml b/specification/pom.xml
index be7e92dee..d27a3a072 100644
--- a/specification/pom.xml
+++ b/specification/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>org.openmicroscopy</groupId>
     <artifactId>ome-model</artifactId>
-    <version>6.3.7-SNAPSHOT</version>
+    <version>6.4.0</version>
     <relativePath>..</relativePath>
   </parent>