diff --git a/impl/src/main/java/org/opencord/olt/impl/OltFlowService.java b/impl/src/main/java/org/opencord/olt/impl/OltFlowService.java
index 83919a4..466d363 100644
--- a/impl/src/main/java/org/opencord/olt/impl/OltFlowService.java
+++ b/impl/src/main/java/org/opencord/olt/impl/OltFlowService.java
@@ -67,8 +67,8 @@
 import org.slf4j.Logger;
 
 import java.util.Dictionary;
-import java.util.Optional;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Properties;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.CompletableFuture;
diff --git a/impl/src/test/java/org/opencord/olt/impl/TestBase.java b/impl/src/test/java/org/opencord/olt/impl/TestBase.java
index 5153d10..47507fb 100644
--- a/impl/src/test/java/org/opencord/olt/impl/TestBase.java
+++ b/impl/src/test/java/org/opencord/olt/impl/TestBase.java
@@ -229,11 +229,21 @@
         }
 
         @Override
+        public boolean removeAll(Map<K, Collection<? extends V>> mapping) {
+            return false;
+        }
+
+        @Override
         public boolean putAll(K key, Collection<? extends V> values) {
             return false;
         }
 
         @Override
+        public boolean putAll(Map<K, Collection<? extends V>> mapping) {
+            return false;
+        }
+
+        @Override
         public Versioned<Collection<? extends V>> replaceValues(K key, Collection<V> values) {
             return null;
         }
diff --git a/pom.xml b/pom.xml
index d78d1d3..5439976 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.onosproject</groupId>
         <artifactId>onos-dependencies</artifactId>
-        <version>2.2.8</version>
+        <version>2.5.2-SNAPSHOT</version>
     </parent>
 
     <groupId>org.opencord</groupId>
@@ -117,7 +117,17 @@
             </snapshots>
         </repository>
     </repositories>
-
+    <pluginRepositories>
+        <pluginRepository>
+            <id>sonatype-snapshots</id>
+            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+            <snapshots>
+                <enabled>true</enabled>
+                <updatePolicy>always</updatePolicy>
+                <checksumPolicy>fail</checksumPolicy>
+            </snapshots>
+        </pluginRepository>
+    </pluginRepositories>
     <distributionManagement>
         <snapshotRepository>
             <id>ossrh</id>