diff --git a/releng/releng-target/xtext-core.target.target b/releng/releng-target/xtext-core.target.target
index a628522ab..dc6be6e4f 100644
--- a/releng/releng-target/xtext-core.target.target
+++ b/releng/releng-target/xtext-core.target.target
@@ -3,18 +3,18 @@
 <target name="org.eclipse.xtext.helios.target" sequenceNumber="0">
 	<locations>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="false" type="InstallableUnit">
-			<repository location="http://download.eclipse.org/modeling/tmf/xtext/updates/releases/2.15.0"/>
+			<repository location="https://download.eclipse.org/modeling/tmf/xtext/updates/releases/2.15.0"/>
 			<unit id="org.eclipse.xtext.sdk.feature.group" version="0.0.0"/>
 		</location>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="false" type="InstallableUnit">
-			<repository location="http://download.eclipse.org/modeling/emft/mwe/updates/releases/2.10.0"/>
+			<repository location="https://download.eclipse.org/modeling/emft/mwe/updates/releases/2.10.0"/>
 			<unit id="org.eclipse.emf.mwe2.language.sdk.feature.group" version="0.0.0"/>
 		</location>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="false" type="InstallableUnit">
-			<repository location="http://download.eclipse.org/releases/oxygen/201804111000"/>
+			<repository location="https://download.eclipse.org/releases/oxygen/201804111000"/>
 		</location>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
-			<repository location="http://download.eclipse.org/tools/orbit/downloads/drops/R20180606145124/repository"/>
+			<repository location="https://download.eclipse.org/tools/orbit/downloads/drops/R20180606145124/repository"/>
 			<unit id="org.junit" version="0.0.0"/>
 		</location>
 	</locations>