diff --git a/apps/gluon/src/main/java/org/onosproject/gluon/manager/GluonManager.java b/apps/gluon/src/main/java/org/onosproject/gluon/manager/GluonManager.java
index c0a4b67..1d8b32a 100644
--- a/apps/gluon/src/main/java/org/onosproject/gluon/manager/GluonManager.java
+++ b/apps/gluon/src/main/java/org/onosproject/gluon/manager/GluonManager.java
@@ -15,11 +15,11 @@
  */
 package org.onosproject.gluon.manager;
 
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.onosproject.core.CoreService;
 import org.onosproject.gluon.rsc.GluonConfig;
 import org.onosproject.gluon.rsc.GluonServer;
@@ -41,10 +41,10 @@
     private final Logger log = LoggerFactory.getLogger(getClass());
     private static final String APP_ID = "org.onosproject.gluon";
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected CoreService coreService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected NetworkConfigRegistry configRegistry;