diff --git a/ant_on_air/tests/AntOnAir-app.xml b/ant_on_air/tests/AntOnAir-app.xml
index 2894c1c..5367e0c 100644
--- a/ant_on_air/tests/AntOnAir-app.xml
+++ b/ant_on_air/tests/AntOnAir-app.xml
@@ -17,7 +17,7 @@
   limitations under the License.
 
 -->
-<application xmlns="http://ns.adobe.com/air/application/3.4">
+<application xmlns="http://ns.adobe.com/air/application/4.0">
 
 <!-- Adobe AIR Application Descriptor File Template.
 
diff --git a/installer/src/InstallApacheFlex-app.xml b/installer/src/InstallApacheFlex-app.xml
index 15e4ee7..c5f5598 100644
--- a/installer/src/InstallApacheFlex-app.xml
+++ b/installer/src/InstallApacheFlex-app.xml
@@ -17,7 +17,7 @@
   limitations under the License.
 
 -->
-<application xmlns="http://ns.adobe.com/air/application/3.8">
+<application xmlns="http://ns.adobe.com/air/application/4.0">
 
 <!-- Adobe AIR Application Descriptor File Template.