diff --git a/main/pom.xml b/main/pom.xml
index 2df1fa916..bf0204300 100644
--- a/main/pom.xml
+++ b/main/pom.xml
@@ -236,9 +236,9 @@
       <version>2.4</version>
     </dependency>
     <dependency>
-      <groupId>org.apache.ant</groupId>
-      <artifactId>ant</artifactId> <!-- for org.apache.tools.bzip2 -->
-      <version>1.8.0</version>
+      <groupId>org.apache.commons</groupId>
+      <artifactId>commons-compress</artifactId>
+      <version>1.20</version>
     </dependency>
     <dependency>
       <groupId>org.jsoup</groupId>
diff --git a/main/src/com/google/refine/ProjectManager.java b/main/src/com/google/refine/ProjectManager.java
index 86b4bdd5a..60ce1d695 100644
--- a/main/src/com/google/refine/ProjectManager.java
+++ b/main/src/com/google/refine/ProjectManager.java
@@ -46,7 +46,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 
-import org.apache.tools.tar.TarOutputStream;
+import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -178,7 +178,7 @@ public abstract class ProjectManager {
      * @param tos
      * @throws IOException
      */
-    public abstract void exportProject(long projectId, TarOutputStream tos) throws IOException;
+    public abstract void exportProject(long projectId, TarArchiveOutputStream tos) throws IOException;
 
 
     /**
diff --git a/main/src/com/google/refine/importing/ImportingUtilities.java b/main/src/com/google/refine/importing/ImportingUtilities.java
index 8000a0b25..d01d64066 100644
--- a/main/src/com/google/refine/importing/ImportingUtilities.java
+++ b/main/src/com/google/refine/importing/ImportingUtilities.java
@@ -60,6 +60,9 @@ import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
+import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
+import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
+import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
 import org.apache.commons.fileupload.FileItem;
 import org.apache.commons.fileupload.ProgressListener;
 import org.apache.commons.fileupload.disk.DiskFileItemFactory;
@@ -73,9 +76,6 @@ import org.apache.http.client.methods.HttpGet;
 import org.apache.http.impl.client.DecompressingHttpClient;
 import org.apache.http.impl.client.DefaultHttpClient;
 import org.apache.http.util.EntityUtils;
-import org.apache.tools.bzip2.CBZip2InputStream;
-import org.apache.tools.tar.TarEntry;
-import org.apache.tools.tar.TarInputStream;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -592,11 +592,11 @@ public class ImportingUtilities {
         String fileName = file.getName();
         try {
             if (fileName.endsWith(".tar.gz") || fileName.endsWith(".tgz")) {
-                return new TarInputStream(new GZIPInputStream(new FileInputStream(file)));
+                return new TarArchiveInputStream(new GZIPInputStream(new FileInputStream(file)));
             } else if (fileName.endsWith(".tar.bz2")) {
-                return new TarInputStream(new CBZip2InputStream(new FileInputStream(file)));
+                return new TarArchiveInputStream(new BZip2CompressorInputStream(new FileInputStream(file)));
             } else if (fileName.endsWith(".tar") || "application/x-tar".equals(contentType)) {
-                return new TarInputStream(new FileInputStream(file));
+                return new TarArchiveInputStream(new FileInputStream(file));
             } else if (fileName.endsWith(".zip") 
                     || "application/x-zip-compressed".equals(contentType)
                     || "application/zip".equals(contentType) 
@@ -618,11 +618,11 @@ public class ImportingUtilities {
         ArrayNode fileRecords,
         final Progress progress
     ) {
-        if (archiveIS instanceof TarInputStream) {
-            TarInputStream tis = (TarInputStream) archiveIS;
+        if (archiveIS instanceof TarArchiveInputStream) {
+            TarArchiveInputStream tis = (TarArchiveInputStream) archiveIS;
             try {
-                TarEntry te;
-                while (!progress.isCanceled() && (te = tis.getNextEntry()) != null) {
+                TarArchiveEntry te;
+                while (!progress.isCanceled() && (te = tis.getNextTarEntry()) != null) {
                     if (!te.isDirectory()) {
                         String fileName2 = te.getName();
                         File file2 = allocateFile(rawDataDir, fileName2);
@@ -702,7 +702,7 @@ public class ImportingUtilities {
                     // No BZ prefix as appended by command line tools.  Reset and hope for the best
                     is.reset();
                 }
-                return new CBZip2InputStream(is);
+                return new BZip2CompressorInputStream(is);
             }
         } catch (IOException e) {
             logger.warn("Something that looked like a compressed file gave an error on open: "+file,e);
diff --git a/main/src/com/google/refine/io/FileProjectManager.java b/main/src/com/google/refine/io/FileProjectManager.java
index 75e4fa231..e8b2d74c2 100644
--- a/main/src/com/google/refine/io/FileProjectManager.java
+++ b/main/src/com/google/refine/io/FileProjectManager.java
@@ -36,12 +36,9 @@ package com.google.refine.io;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
-import java.io.FileWriter;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.io.OutputStreamWriter;
-import java.nio.charset.StandardCharsets;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map.Entry;
@@ -49,9 +46,10 @@ import java.util.Set;
 import java.util.zip.GZIPInputStream;
 import java.util.zip.GZIPOutputStream;
 
-import org.apache.tools.tar.TarEntry;
-import org.apache.tools.tar.TarInputStream;
-import org.apache.tools.tar.TarOutputStream;
+import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
+import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
+import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
+import org.apache.poi.util.IOUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -162,10 +160,10 @@ public class FileProjectManager extends ProjectManager  {
     }
 
     protected void untar(File destDir, InputStream inputStream) throws IOException {
-        TarInputStream tin = new TarInputStream(inputStream);
-        TarEntry tarEntry = null;
+        TarArchiveInputStream tin = new TarArchiveInputStream(inputStream);
+        TarArchiveEntry tarEntry = null;
 
-        while ((tarEntry = tin.getNextEntry()) != null) {
+        while ((tarEntry = tin.getNextTarEntry()) != null) {
             File destEntry = new File(destDir, tarEntry.getName());
             File parent = destEntry.getParentFile();
 
@@ -178,7 +176,7 @@ public class FileProjectManager extends ProjectManager  {
             } else {
                 FileOutputStream fout = new FileOutputStream(destEntry);
                 try {
-                    tin.copyEntryContents(fout);
+                    IOUtils.copy(tin, fout);
                 } finally {
                     fout.close();
                 }
@@ -189,12 +187,12 @@ public class FileProjectManager extends ProjectManager  {
     }
 
     @Override
-    public void exportProject(long projectId, TarOutputStream tos) throws IOException {
+    public void exportProject(long projectId, TarArchiveOutputStream tos) throws IOException {
         File dir = this.getProjectDir(projectId);
         this.tarDir("", dir, tos);
     }
 
-    protected void tarDir(String relative, File dir, TarOutputStream tos) throws IOException{
+    protected void tarDir(String relative, File dir, TarArchiveOutputStream tos) throws IOException{
         File[] files = dir.listFiles();
         if (files == null) return;
         for (File file : files) {
@@ -205,17 +203,17 @@ public class FileProjectManager extends ProjectManager  {
                 if (file.isDirectory()) {
                     tarDir(path + File.separator, file, tos);
                 } else {
-                    TarEntry entry = new TarEntry(path);
+                    TarArchiveEntry entry = new TarArchiveEntry(path);
 
-                    entry.setMode(TarEntry.DEFAULT_FILE_MODE);
+                    entry.setMode(TarArchiveEntry.DEFAULT_FILE_MODE);
                     entry.setSize(file.length());
                     entry.setModTime(file.lastModified());
 
-                    tos.putNextEntry(entry);
+                    tos.putArchiveEntry(entry);
 
                     copyFile(file, tos);
 
-                    tos.closeEntry();
+                    tos.closeArchiveEntry();
                 }
             }
         }
@@ -427,7 +425,7 @@ public class FileProjectManager extends ProjectManager  {
     
     public static void gzipTarToOutputStream(Project project, OutputStream os) throws IOException {
         GZIPOutputStream gos = new GZIPOutputStream(os);
-        TarOutputStream tos = new TarOutputStream(gos);
+        TarArchiveOutputStream tos = new TarArchiveOutputStream(gos);
         try {
             ProjectManager.singleton.exportProject(project.id, tos);
         } finally {
diff --git a/main/tests/server/src/com/google/refine/ProjectManagerStub.java b/main/tests/server/src/com/google/refine/ProjectManagerStub.java
index 9c111d568..4671c86bc 100644
--- a/main/tests/server/src/com/google/refine/ProjectManagerStub.java
+++ b/main/tests/server/src/com/google/refine/ProjectManagerStub.java
@@ -36,7 +36,7 @@ package com.google.refine;
 import java.io.IOException;
 import java.io.InputStream;
 
-import org.apache.tools.tar.TarOutputStream;
+import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
 
 import com.google.refine.ProjectManager;
 import com.google.refine.ProjectMetadata;
@@ -56,7 +56,7 @@ public class ProjectManagerStub extends ProjectManager {
     }
 
     @Override
-    public void exportProject(long projectId, TarOutputStream tos) throws IOException {
+    public void exportProject(long projectId, TarArchiveOutputStream tos) throws IOException {
         // empty
     }