diff --git a/releng/org.eclipse.emf.releng.buckminster/releng/local/commands.txt b/releng/org.eclipse.emf.releng.buckminster/releng/local/commands.txt
index 43cf4b1..6ac30d3 100644
--- a/releng/org.eclipse.emf.releng.buckminster/releng/local/commands.txt
+++ b/releng/org.eclipse.emf.releng.buckminster/releng/local/commands.txt
@@ -4,9 +4,9 @@
 setpref targetPlatformPath="${WORKSPACE}/buildroot/target.platform"
 
 # Import all but rap.sdk cause it has a bad dependency to eclipse 3.8
-import -DuseMirror=false -Dbuild.type=${BUILD_TYPE} -Dwithout.gdt=true  -Dwithout.rap=true "${checkout.location}org.eclipse.emf.releng.buckminster/releng/emf-all.mspec"
+import -DuseMirror=true -Dbuild.type=${BUILD_TYPE} -Dwithout.gdt=true  -Dwithout.rap=true "${checkout.location}org.eclipse.emf.releng.buckminster/releng/emf-all.mspec"
 # Import sources produced by the EMF Base build into the target platform
-import -DuseMirror=false -Dbuild.type=${BUILD_TYPE} -Dwithout.gdt=true "${checkout.location}org.eclipse.emf.releng.buckminster/releng/emf-platform.base.sources.cquery"
+import -DuseMirror=true -Dbuild.type=${BUILD_TYPE} -Dwithout.gdt=true "${checkout.location}org.eclipse.emf.releng.buckminster/releng/emf-platform.base.sources.cquery"
 build
 
 junit --launch "org.eclipse.emf.test.core/Test EMF Core.launch" --flatXML --output "${WORKSPACE}/build-result/test-results/Test EMF Core.xml"
diff --git a/releng/org.eclipse.emf.releng.buckminster/target-platforms/developer-rap.target b/releng/org.eclipse.emf.releng.buckminster/target-platforms/developer-rap.target
index a271c53..ec917b0 100644
--- a/releng/org.eclipse.emf.releng.buckminster/target-platforms/developer-rap.target
+++ b/releng/org.eclipse.emf.releng.buckminster/target-platforms/developer-rap.target
@@ -10,7 +10,7 @@
 <unit id="org.eclipse.platform.ide" version="0.0.0"/>
 <unit id="org.eclipse.jdt.feature.group" version="0.0.0"/>
 <unit id="org.eclipse.pde.junit.runtime" version="0.0.0"/>
-<repository location="http://download.eclipse.org/eclipse/updates/3.7/"/>
+<repository location="http://download.eclipse.org/eclipse/updates/4.4/"/>
 </location>
 <location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="slicer" includeSource="false" type="InstallableUnit">
 <unit id="org.eclipse.draw2d.feature.group" version="0.0.0"/>