diff --git a/acyclic-visitor/README.md b/acyclic-visitor/README.md
index 939fe38b97d1..83b618601fb2 100644
--- a/acyclic-visitor/README.md
+++ b/acyclic-visitor/README.md
@@ -33,7 +33,7 @@ The bad:
 * Parallel hierarchy of visitors has to be created for all members in visitable class hierarchy.
 
 ## Related patterns
-* [Visitor Pattern](../visitor/README.md)
+* [Visitor Pattern](../visitor/)
 
 ## Credits
-* [Acyclic Visitor](http://condor.depaul.edu/dmumaugh/OOT/Design-Principles/acv.pdf)
\ No newline at end of file
+* [Acyclic Visitor](http://condor.depaul.edu/dmumaugh/OOT/Design-Principles/acv.pdf)
diff --git a/aggregator-microservices/aggregator-service/src/main/java/com/iluwatar/aggregator/microservices/ProductInformationClientImpl.java b/aggregator-microservices/aggregator-service/src/main/java/com/iluwatar/aggregator/microservices/ProductInformationClientImpl.java
index 16849d529386..131fbf8695cd 100644
--- a/aggregator-microservices/aggregator-service/src/main/java/com/iluwatar/aggregator/microservices/ProductInformationClientImpl.java
+++ b/aggregator-microservices/aggregator-service/src/main/java/com/iluwatar/aggregator/microservices/ProductInformationClientImpl.java
@@ -22,6 +22,7 @@
  */
 package com.iluwatar.aggregator.microservices;
 
+import org.apache.http.client.ClientProtocolException;
 import org.apache.http.client.methods.CloseableHttpResponse;
 import org.apache.http.client.methods.HttpGet;
 import org.apache.http.impl.client.CloseableHttpClient;
@@ -49,8 +50,10 @@ public String getProductTitle() {
       try (CloseableHttpResponse httpResponse = httpClient.execute(httpGet)) {
         response = EntityUtils.toString(httpResponse.getEntity());
       }
-    } catch (IOException e) {
-      LOGGER.error("Exception caught.", e);
+    } catch (ClientProtocolException cpe) {
+      LOGGER.error("ClientProtocolException Occured", cpe);
+    } catch (IOException ioe) {
+      LOGGER.error("IOException Occurred", ioe);
     }
     return response;
   }
diff --git a/aggregator-microservices/aggregator-service/src/main/java/com/iluwatar/aggregator/microservices/ProductInventoryClientImpl.java b/aggregator-microservices/aggregator-service/src/main/java/com/iluwatar/aggregator/microservices/ProductInventoryClientImpl.java
index 89f1a25e0580..780dccb78e20 100644
--- a/aggregator-microservices/aggregator-service/src/main/java/com/iluwatar/aggregator/microservices/ProductInventoryClientImpl.java
+++ b/aggregator-microservices/aggregator-service/src/main/java/com/iluwatar/aggregator/microservices/ProductInventoryClientImpl.java
@@ -22,6 +22,7 @@
  */
 package com.iluwatar.aggregator.microservices;
 
+import org.apache.http.client.ClientProtocolException;
 import org.apache.http.client.methods.CloseableHttpResponse;
 import org.apache.http.client.methods.HttpGet;
 import org.apache.http.impl.client.CloseableHttpClient;
@@ -49,8 +50,10 @@ public int getProductInventories() {
       try (CloseableHttpResponse httpResponse = httpClient.execute(httpGet)) {
         response = EntityUtils.toString(httpResponse.getEntity());
       }
-    } catch (IOException e) {
-      LOGGER.error("Exception caught.", e);
+    } catch (ClientProtocolException cpe) {
+      LOGGER.error("ClientProtocolException Occured", cpe);
+    } catch (IOException ioe) {
+      LOGGER.error("IOException Occurred", ioe);
     }
     return Integer.parseInt(response);
   }
diff --git a/pom.xml b/pom.xml
index f1a586eb8b34..539da396b2d8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -43,18 +43,20 @@
         <camel.version>2.16.1</camel.version>
         <guava.version>19.0</guava.version>
         <mockito.version>1.10.19</mockito.version>
-        <apache-httpcomponents.version>4.5.2</apache-httpcomponents.version>
+        <apache-httpcomponents.version>4.5.10</apache-httpcomponents.version>
         <htmlunit.version>2.22</htmlunit.version>
         <guice.version>4.0</guice.version>
         <mongo-java-driver.version>3.3.0</mongo-java-driver.version>
-        <slf4j.version>1.7.21</slf4j.version>
-        <logback.version>1.1.7</logback.version>
+        <slf4j.version>1.7.28</slf4j.version>
+        <logback.version>1.2.3</logback.version>
         <aws-lambda-core.version>1.1.0</aws-lambda-core.version>
         <aws-java-sdk-dynamodb.version>1.11.289</aws-java-sdk-dynamodb.version>
         <aws-lambda-log4j.version>1.0.0</aws-lambda-log4j.version>
         <aws-lambda-java-events.version>2.0.1</aws-lambda-java-events.version>
         <jackson.version>2.8.5</jackson.version>
         <pmd.version>3.12.0</pmd.version>
+        <jaxb-api.version>2.3.0</jaxb-api.version>
+        <annotation-api.version>1.3.1</annotation-api.version>
     </properties>
     <modules>
         <module>abstract-factory</module>
@@ -298,6 +300,16 @@
                 <artifactId>mongo-java-driver</artifactId>
                 <version>${mongo-java-driver.version}</version>
             </dependency>
+            <dependency>
+                <groupId>javax.xml.bind</groupId>
+                <artifactId>jaxb-api</artifactId>
+                <version>${jaxb-api.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>javax.annotation</groupId>
+                <artifactId>javax.annotation-api</artifactId>
+                <version>${annotation-api.version}</version>
+            </dependency>
         </dependencies>
     </dependencyManagement>
 
diff --git a/repository/pom.xml b/repository/pom.xml
index 48bca0cf2ba8..2ccdc9da7ba5 100644
--- a/repository/pom.xml
+++ b/repository/pom.xml
@@ -63,5 +63,13 @@
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
         </dependency>
+        <dependency>
+            <groupId>javax.xml.bind</groupId>
+            <artifactId>jaxb-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>javax.annotation</groupId>
+            <artifactId>javax.annotation-api</artifactId>
+        </dependency>
     </dependencies>
 </project>