diff --git a/pom.xml b/pom.xml
index 089ef55..d11ef88 100644
--- a/pom.xml
+++ b/pom.xml
@@ -42,9 +42,14 @@
 
         <!-- APACHE COMMONS -->
         <dependency>
-            <groupId>org.apache.httpcomponents</groupId>
-            <artifactId>httpclient</artifactId>
-            <version>${commons-httpclient.version}</version>
+            <groupId>commons-httpclient</groupId>
+            <artifactId>commons-httpclient</artifactId>
+            <version>3.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.ant</groupId>
+            <artifactId>ant</artifactId>
+            <version>1.9.4</version>
         </dependency>
 
 
@@ -58,6 +63,11 @@
             <artifactId>javax.activation-api</artifactId>
             <version>1.2.0</version>
         </dependency>
+        <dependency>
+            <groupId>javax.mail</groupId>
+            <artifactId>mail</artifactId>
+            <version>1.4</version>
+        </dependency>
 
         <!-- TESTS -->
         <dependency>
@@ -123,7 +133,6 @@
         <commons-httpclient.version>4.5.13</commons-httpclient.version>
 
 
-
         <!-- UTILS  -->
         <guava.version>30.1.1-jre</guava.version>
 
diff --git a/src/main/java/org/realtor/rets/retsapi/RETSConnection.java b/src/main/java/org/realtor/rets/retsapi/RETSConnection.java
index b932bc7..79be8cc 100644
--- a/src/main/java/org/realtor/rets/retsapi/RETSConnection.java
+++ b/src/main/java/org/realtor/rets/retsapi/RETSConnection.java
@@ -5,12 +5,13 @@
  */
 package org.realtor.rets.retsapi;
 
-import com.aftexsw.util.bzip.CBZip2InputStream;
+//import com.aftexsw.util.bzip.CBZip2InputStream;
+
+import ch.qos.logback.classic.BasicConfigurator;
 import org.apache.commons.httpclient.*;
 import org.apache.commons.httpclient.cookie.CookiePolicy;
 import org.apache.commons.httpclient.methods.GetMethod;
 import org.apache.commons.httpclient.methods.PostMethod;
-import org.apache.log4j.BasicConfigurator;
 import org.realtor.rets.util.RETSConfigurator;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -130,7 +131,7 @@ public class RETSConnection extends java.lang.Object {
                 log = new PrintWriter(new FileWriter(outFile));
                 log.println("<!-- RETS REQUEST -->");
             } catch (Exception e) {
-                cat.error("could create output file :" + outFile);
+                logger.error("could create output file :" + outFile);
             }
         }
 
@@ -191,7 +192,7 @@ public class RETSConnection extends java.lang.Object {
             }
         }
 
-        cat.debug(msg);
+        logger.debug(msg);
     }
 
     private void writeMapToTransactionLog(Map map) {
@@ -292,7 +293,7 @@ public class RETSConnection extends java.lang.Object {
 
         HttpMethod method = null;
 
-        cat.debug("getURLContent: URL=" + strURL);
+        logger.debug("getURLContent: URL=" + strURL);
 
         try {
             if (requestMethod.equalsIgnoreCase("GET")) {
@@ -427,10 +428,10 @@ public class RETSConnection extends java.lang.Object {
         try {
             serverUrl = transaction.getUrl();
 
-            cat.debug(transaction.getRequestType() + " URL : {" + serverUrl + "}");
+            logger.debug(transaction.getRequestType() + " URL : {" + serverUrl + "}");
 
             if (serverUrl == null) {
-                cat.error(transaction.getRequestType() + " URL is null");
+                logger.error(transaction.getRequestType() + " URL is null");
                 transaction.setResponseStatus("20036");
                 transaction.setResponseStatusText(transaction.getRequestType() + " URL is missing. Successful login is required.");
                 return; // throw exception here
@@ -442,7 +443,7 @@ public class RETSConnection extends java.lang.Object {
             if (transaction.getRequestType().equalsIgnoreCase("Action")) {
                 method = "GET";
             }
-            cat.debug("method: " + method);
+            logger.debug("method: " + method);
 
             InputStream is = getURLContent(serverUrl, method, transaction.getRequestMap());
 
@@ -458,7 +459,7 @@ public class RETSConnection extends java.lang.Object {
                 Object compressionFmt = responseHeaderMap.get("Content-Encoding");
 
                 if (compressionFmt != null) {
-                    cat.debug("Header class : " + compressionFmt.getClass().getName());
+                    logger.debug("Header class : " + compressionFmt.getClass().getName());
 
                     if (compressionFmt.toString().equalsIgnoreCase("[gzip]")) {
                         gzipCompressed = true;
@@ -470,7 +471,7 @@ public class RETSConnection extends java.lang.Object {
                 if (gzipCompressed) {
                     is = new GZIPInputStream(is);
                 } else if (bzipCompressed) {
-                    is = new CBZip2InputStream(is);
+//                    is = new CBZip2InputStream(is);
                 }
             }
             this.writeToTransactionLog("<!-- Obtained and Identified Response Stream -->");
@@ -568,7 +569,7 @@ public class RETSConnection extends java.lang.Object {
      * @param args the command line arguments
      */
     public static void main(String[] args) {
-        BasicConfigurator.configure();
+//        BasicConfigurator.configure();
 
         RETSConnection rc = new RETSConnection();
         RETSLoginTransaction trans = new RETSLoginTransaction();
@@ -612,7 +613,7 @@ public class RETSConnection extends java.lang.Object {
             }
 
             String reqStr = key + "=" + URLEncoder.encode((String) requestMap.get(key));
-            cat.debug(reqStr);
+            logger.debug(reqStr);
             sb.append(reqStr);
 
             if (it.hasNext()) {
diff --git a/src/main/java/org/realtor/rets/retsapi/RETSGetObjectTransaction.java b/src/main/java/org/realtor/rets/retsapi/RETSGetObjectTransaction.java
index 590b041..581ef5c 100644
--- a/src/main/java/org/realtor/rets/retsapi/RETSGetObjectTransaction.java
+++ b/src/main/java/org/realtor/rets/retsapi/RETSGetObjectTransaction.java
@@ -1,18 +1,17 @@
 package org.realtor.rets.retsapi;
 
-import org.apache.log4j.Category;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
-import java.io.IOException;
-import java.io.InputStream;
-
-import java.util.Iterator;
-import java.util.Collection;
-import java.util.ArrayList;
-
-import javax.mail.internet.MimeMultipart;
+import javax.mail.MessagingException;
 import javax.mail.internet.InternetHeaders;
 import javax.mail.internet.MimeBodyPart;
-import javax.mail.MessagingException;
+import javax.mail.internet.MimeMultipart;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Iterator;
 
 /**
  * RETSGetObjectTransaction.java
@@ -34,7 +33,7 @@ public class RETSGetObjectTransaction extends RETSTransaction
      * send back only the location of the resource by calling {@link #setLocation}.
      */
 
-    static Category cat = Category.getInstance(RETSGetObjectTransaction.class);
+    private final static Logger logger = LoggerFactory.getLogger(RETSLoginTransaction.class);
     // collection of body parts resulting from the collision of the server response with the MIME parsing code.
 //    protected Collection fBodyParts;
     protected ArrayList parts;
@@ -63,7 +62,7 @@ public class RETSGetObjectTransaction extends RETSTransaction
      * @param str resource value
      */
     public void setResource(String str) {
-        cat.debug("set Resource=" + str);
+        logger.debug("set Resource=" + str);
         setRequestVariable("Resource", str);
     }
 
@@ -73,7 +72,7 @@ public class RETSGetObjectTransaction extends RETSTransaction
      * @param type type attribute value
      */
     public void setType(String str) {
-        cat.debug("set Type=" + str);
+        logger.debug("set Type=" + str);
         setRequestVariable("Type", str);
     }
 
@@ -84,10 +83,10 @@ public class RETSGetObjectTransaction extends RETSTransaction
      */
     public void setID(String str) {
         if ( str != null ) {
-            cat.debug("set ID=" + str.trim());
+            logger.debug("set ID=" + str.trim());
             setRequestVariable("ID", str.trim());
         } else {
-            cat.debug("set ID=" + str);
+            logger.debug("set ID=" + str);
         }
     }
 
@@ -97,7 +96,7 @@ public class RETSGetObjectTransaction extends RETSTransaction
      * @param str location attribute value
      */
     public void setLocation(String str) {
-        cat.debug("set Location=" + str);
+        logger.debug("set Location=" + str);
         setRequestVariable("Location", str);
     }
 
@@ -133,13 +132,13 @@ public class RETSGetObjectTransaction extends RETSTransaction
         String mimeType;
 //        String contentType = responseHeaderNamed("content-type");
         String contentType = super.getResponseHeader("Content-Type");
-        cat.debug("====[RETSGetObjectTx] --> " + contentType);
+        logger.debug("====[RETSGetObjectTx] --> " + contentType);
         int contentTypeSemicolonIndex =
                 contentType == null ? -1 : contentType.indexOf(";");
 
         // If there was no Content-Type header, we can't do anything here. Punt to the default handler.
         if (contentType == null) {
-            cat.debug("====[RETSGetObjectTx] : NO CONTENT TYPE");
+            logger.debug("====[RETSGetObjectTx] : NO CONTENT TYPE");
             super.setResponseStream(responseStream);
             return;
         }
@@ -150,7 +149,7 @@ public class RETSGetObjectTransaction extends RETSTransaction
         else
             mimeType = contentType.trim();
 
-        cat.debug("====[RETSGetObjectTx] : mime-type -> " + mimeType);
+        logger.debug("====[RETSGetObjectTx] : mime-type -> " + mimeType);
 
         // If the type is text/xml, then this is probably an error response.
         // We need to parse the input stream nondestructively to find out.
@@ -158,7 +157,7 @@ public class RETSGetObjectTransaction extends RETSTransaction
             handleXMLStream(responseStream, mimeType, contentType);
         } else if (mimeType.startsWith("multipart/")) {
             // If it's multipart, take it apart and set up appropriate data structures.
-            cat.debug("====[RETSGetObjectTx] : RECIEVED MULTIPART");
+            logger.debug("====[RETSGetObjectTx] : RECIEVED MULTIPART");
             handleMultipartStream(responseStream, mimeType, contentType);
         } else {
             // Otherwise, since we do have a MIME type, assume that the response *is* object value.
@@ -228,7 +227,7 @@ public class RETSGetObjectTransaction extends RETSTransaction
             setResponseStatus("0");
         } catch (MessagingException messagingException) {
             if (responseStreamDataSource != null)
-                cat.debug(responseStreamDataSource.bufferedDataAsString());
+                logger.debug(responseStreamDataSource.bufferedDataAsString());
 //                System.out.println(responseStreamDataSource.bufferedDataAsString());
 
             messagingException.printStackTrace();
@@ -338,7 +337,7 @@ public class RETSGetObjectTransaction extends RETSTransaction
             if ( part != null ) {
                 Object content = part.getContent();
                 inputStream = (InputStream) content;
-                cat.debug("--- MimeBodyPart Content--> " + content);
+                logger.debug("--- MimeBodyPart Content--> " + content);
             }
         } catch (Exception e) {
             e.printStackTrace();