diff --git a/pom.xml b/pom.xml
index 007bddf..5f1f1c5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -56,6 +56,13 @@
  
     <!-- for JUnit test -->
     <dependency>
+      <groupId>haya4.tools</groupId>
+      <artifactId>haya4-compress</artifactId>
+      <version>0.0.2</version>
+      <scope>test</scope>
+      <type>jar</type>
+    </dependency>
+    <dependency>
       <groupId>org.hamcrest</groupId>
       <artifactId>hamcrest-core</artifactId>
       <version>2.2</version>
diff --git a/src/test/java/osm/surveyor/matchtime/UnZip.java b/src/test/java/osm/surveyor/matchtime/UnZip.java
deleted file mode 100644
index 37e9d47..0000000
--- a/src/test/java/osm/surveyor/matchtime/UnZip.java
+++ /dev/null
@@ -1,139 +0,0 @@
-package osm.surveyor.matchtime;
-import java.io.BufferedInputStream;
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.util.zip.ZipEntry;
-import java.util.zip.ZipInputStream;
-
-import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
-import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
-import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
-
-public class UnZip {
-
-	/**
-     * *.tar.gz解凍
-     * ファイル更新日時をオリジナルと同じにします。
-     * @param tazFile 解凍する*.tar.gzファイル
-     * @param dest 解凍先フォルダ
-     * @throws IOException 
-     */
-    public static void uncompress(File tazFile, File dest) throws IOException {
-        dest.mkdir();
-        
-        try (TarArchiveInputStream tarIn = new TarArchiveInputStream(new GzipCompressorInputStream(new BufferedInputStream(new FileInputStream(tazFile))))) {
-            TarArchiveEntry tarEntry = tarIn.getNextTarEntry();
-            while (tarEntry != null) {
-                File destPath = new File(dest, tarEntry.getName());
-                //System.out.println("uncompress: " + destPath.getCanonicalPath());
-                if (tarEntry.isDirectory()) {
-                    destPath.mkdirs();
-                }
-                else {
-                    File dir = new File(destPath.getParent());
-                    if (!dir.exists()) {
-                        dir.mkdirs();
-                    }
-                    destPath.createNewFile();
-                    byte[] btoRead = new byte[1024];
-                    try (BufferedOutputStream bout = new BufferedOutputStream(new FileOutputStream(destPath))) {
-                        int len;
-                        while ((len = tarIn.read(btoRead)) != -1) {
-                            bout.write(btoRead, 0, len);
-                        }
-                    }
-                    destPath.setLastModified(tarEntry.getLastModifiedDate().getTime());
-                }
-                tarEntry = tarIn.getNextTarEntry();
-            }
-        }
-    }
-
-    /**
-     * Zipファイルを展開します
-     * @param aZipFile zipファイル
-     * @param aOutDir  出力先ディレクトリ
-     * @throws java.io.IOException
-     */
-    public static void decode(File aZipFile, String aOutDir) throws IOException {
-        FileInputStream  fileIn  = null;
-        FileOutputStream fileOut = null;
-        ZipInputStream zipIn = null;
-        
-        try {
-            File outDir = new File(aOutDir);
-            outDir.mkdirs();
-            
-            fileIn = new FileInputStream(aZipFile);
-            zipIn = new ZipInputStream(fileIn);
-            
-            ZipEntry entry = null;
-            while ((entry = zipIn.getNextEntry()) != null) {
-                if (entry.isDirectory()) {
-                    String relativePath = entry.getName();
-                    outDir = new File(outDir, relativePath);
-                    outDir.mkdirs();
-                }
-                else {
-                    String relativePath = entry.getName();
-                    File outFile = new File( outDir, relativePath );
-                    
-                    File parentFile = outFile.getParentFile();
-                    parentFile.mkdirs();
-                    
-                    fileOut = new FileOutputStream( outFile );
-                    
-                    byte[] buf = new byte[ 256 ];
-                    int size = 0;
-                    while ((size = zipIn.read(buf)) > 0){
-                        fileOut.write(buf, 0, size);
-                    }
-                    fileOut.close();
-                    fileOut = null;
-                }
-                zipIn.closeEntry();
-            }
-        }
-        catch (IOException e) {
-            e.printStackTrace();
-        }
-        finally {
-            if (fileIn != null) {
-                try {
-                    fileIn.close();
-                }
-                catch (IOException e) {}
-            }
-            if (fileOut != null) {
-                try {
-                    fileOut.close();
-                }
-                catch(IOException e) {}
-            }
-            zipIn.close();
-        }
-    }
-    
-
-    public static void delete(File file) throws IOException {
-        if (!file.exists()) {
-            System.out.println("ERROR: ファイルまたはディレクトリが見つかりませんでした。");
-            throw new IOException("File not found.");
-        }
-        
-        if (file.isDirectory()) {
-            File files[] = file.listFiles();
-            if (files != null) {
-                for (File file1 : files) {
-                    delete(file1); // 再帰呼び出し
-                }
-            }
-        }
-        if (!file.delete()) {
-            System.out.println("ERROR: ファイルは削除できませんでした。 '" + file.getAbsolutePath() +"'");
-        }
-    }
-}