diff --git a/pom.xml b/pom.xml
index e15845f..45070d1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -38,13 +38,15 @@
   </distributionManagement>
 
   <dependencies>
+    <!-- 
     <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-imaging</artifactId>
       <version>1.0-alpha1</version>
       <type>jar</type>
     </dependency>
-
+ -->
+ 
     <!-- for JUnit test -->
     <dependency>
       <groupId>org.hamcrest</groupId>
diff --git a/src/main/java/osm/surveyor/matchtime/Restamp.java b/src/main/java/osm/surveyor/matchtime/Restamp.java
index d25f2e9..5054428 100644
--- a/src/main/java/osm/surveyor/matchtime/Restamp.java
+++ b/src/main/java/osm/surveyor/matchtime/Restamp.java
@@ -14,7 +14,6 @@
 import java.util.ResourceBundle;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
-import org.apache.commons.imaging.ImageReadException;
 
 /**
  * 動画から一定間隔で切り出したIMAGEファイルの更新日時を書き換える