diff --git a/eclipse.spec b/eclipse.spec
index 5a4a655..746cc16 100644
--- a/eclipse.spec
+++ b/eclipse.spec
@@ -37,7 +37,7 @@ Epoch:                  1
 Summary:        An open, extensible IDE
 Name:           eclipse
 Version:        %{eclipse_version}
-Release:        9%{?dist}
+Release:        10%{?dist}
 License:        EPL
 URL:            http://www.eclipse.org/
 
@@ -1099,6 +1099,9 @@ fi
 %{_libdir}/%{pkg_name}/plugins/org.eclipse.osgi.compatibility.state_*
 
 %changelog
+* Thu Jul 30 2015 Mat Booth <mat.booth@redhat.com> - 1:4.5.0-10
+- Preserve JDT core test data
+
 * Wed Jul 22 2015 Roland Grunberg <rgrunber@redhat.com> - 1:4.5.0-9
 - Fix JDT Feature path for TargetDefinitionPersistenceTests (PDE)
 - SimpleConfiguratorUtils should handle base == null for tests
diff --git a/get-eclipse.sh b/get-eclipse.sh
index d82889b..0220078 100755
--- a/get-eclipse.sh
+++ b/get-eclipse.sh
@@ -20,12 +20,14 @@ rm -rf bootstrap streams scripts
 # Comment this line to get a shallow clone.
 find . -type d -name ".git" | xargs rm -rf
 
-# Delete pre-built binary artifacts
-find . -type f -name *.jar -delete
+# Delete pre-built binary artifacts except some test data that cannot be generated
+find . ! -path "*/JCL/*" \
+   -type f -name *.jar -delete
 find . -type f -name *.class -delete
 find . -type f -name *.so -delete
 find . -type f -name *.dll -delete
 find . -type f -name *.jnilib -delete
+find . -type f -name *.exe -delete
 # Remove pre-compiled native launchers
 rm -rf rt.equinox.binaries/org.eclipse.equinox.executable/{bin,contributed}/
 
diff --git a/sources b/sources
index 65a342d..1050ceb 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
 013e9ae2efb64b55459ca3f62487d943  org.eclipse.linuxtools.eclipse-build-27693f414e65ae520724dca2fa5c682fa3256d29.tar.xz
-8d1b5040c96abd98b61aca3bb58478d7  R4_platform-aggregator-R4_5.tar.xz
+0d6cb23e5a075c808d05899555d19f71  R4_platform-aggregator-R4_5.tar.xz