diff --git a/pom.xml b/pom.xml
index ad8b5bb..c9720b1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,12 +18,13 @@
     <!-- this becomes the forced context7.3.0.qualifier
     <forceContextQualifier>M3-SNAPSHOT</forceContextQualifier> -->
 
-    <tycho-version>0.23.0</tycho-version>
+    <tycho-version>0.15.0</tycho-version>
+
 
     <jetty-version>8.1.3-SNAPSHOT</jetty-version>
     <p2-install-folder-name>development</p2-install-folder-name>
 
-    <signing-plugin-version>1.0.1</signing-plugin-version>
+    <signing-plugin-version>1.0.0</signing-plugin-version>
 
     <eclipse-mirror-url>http://download.eclipse.org</eclipse-mirror-url>
     <equinox-site>${eclipse-mirror-url}/eclipse/updates/3.8</equinox-site>
@@ -366,10 +367,6 @@
   </dependencies>
 
   <repositories>
-   <!--repository>
-     <id>jetty-staging</id>
-     <url>https://oss.sonatype.org/content/repositories/jetty-149/</url>
-   </repository-->
    <repository>
      <id>equinox</id>
      <layout>p2</layout>
@@ -381,8 +378,7 @@
      <url>${orbit-site}</url>
    </repository>
   </repositories>
-
-  <build>
+ <build>
     <plugins>
       <plugin>
         <groupId>org.eclipse.tycho</groupId>