diff --git a/nablarch-jackson-adaptor/pom.xml b/nablarch-jackson-adaptor/pom.xml
index 077adff..d751439 100644
--- a/nablarch-jackson-adaptor/pom.xml
+++ b/nablarch-jackson-adaptor/pom.xml
@@ -19,12 +19,6 @@
       <artifactId>jackson-databind</artifactId>
       <version>2.10.3</version>
     </dependency>
-    <dependency>
-      <groupId>org.codehaus.jackson</groupId>
-      <artifactId>jackson-mapper-asl</artifactId>
-      <version>1.9.13</version>
-      <scope>provided</scope>
-    </dependency>
 
     <dependency>
       <groupId>com.nablarch.framework</groupId>
diff --git a/nablarch-jackson-adaptor/src/main/java/nablarch/integration/jaxrs/jackson/Jackson1BodyConverter.java b/nablarch-jackson-adaptor/src/main/java/nablarch/integration/jaxrs/jackson/Jackson1BodyConverter.java
deleted file mode 100644
index 543bb79..0000000
--- a/nablarch-jackson-adaptor/src/main/java/nablarch/integration/jaxrs/jackson/Jackson1BodyConverter.java
+++ /dev/null
@@ -1,48 +0,0 @@
-package nablarch.integration.jaxrs.jackson;
-
-import java.io.IOException;
-import java.io.Reader;
-
-import org.codehaus.jackson.map.ObjectMapper;
-
-import nablarch.fw.jaxrs.BodyConverter;
-
-/**
- * Jackson1.xを使用してリクエスト/レスポンスの変換を行う{@link BodyConverter}実装クラス。
- *
- * @author Kiyohito Itoh
- */
-public class Jackson1BodyConverter extends JacksonBodyConverterSupport {
-
-    /** {@link ObjectMapper} */
-    private final ObjectMapper objectMapper;
-
-    /**
-     * {@code JacksonBodyConverter}を生成する。
-     */
-    public Jackson1BodyConverter() {
-        objectMapper = new ObjectMapper();
-        configure(objectMapper);
-    }
-
-    /**
-     * {@link ObjectMapper}に対するオプション設定などを行う。
-     * <p/>
-     * このクラスでは特に何も行わないので、オプション設定はサブクラス側で行う必要がある。
-     *
-     * @param objectMapper {@link ObjectMapper}
-     */
-    protected void configure(ObjectMapper objectMapper) {
-        // nop
-    }
-
-    @Override
-    protected Object readValue(Reader src, Class<?> valueType) throws IOException {
-        return objectMapper.readValue(src, valueType);
-    }
-
-    @Override
-    protected String writeValueAsString(Object value) throws IOException {
-        return objectMapper.writeValueAsString(value);
-    }
-}
diff --git a/nablarch-jackson-adaptor/src/test/java/nablarch/integration/jaxrs/jackson/Jackson1BodyConverterTest.java b/nablarch-jackson-adaptor/src/test/java/nablarch/integration/jaxrs/jackson/Jackson1BodyConverterTest.java
deleted file mode 100644
index b41d1a5..0000000
--- a/nablarch-jackson-adaptor/src/test/java/nablarch/integration/jaxrs/jackson/Jackson1BodyConverterTest.java
+++ /dev/null
@@ -1,62 +0,0 @@
-package nablarch.integration.jaxrs.jackson;
-
-import mockit.Mocked;
-import mockit.Expectations;
-import org.codehaus.jackson.map.DeserializationConfig;
-import org.codehaus.jackson.map.JsonMappingException;
-import org.codehaus.jackson.map.ObjectMapper;
-import org.codehaus.jackson.map.SerializationConfig.Feature;
-import org.codehaus.jackson.map.exc.UnrecognizedPropertyException;
-import org.junit.Test;
-
-/**
- * {@link Jackson1BodyConverter}のテストクラス。
- */
-public class Jackson1BodyConverterTest extends JacksonBodyConverterTestSupport<Jackson1BodyConverter> {
-
-    @Override
-    protected Jackson1BodyConverter createSut() {
-        return new Jackson1BodyConverter();
-    }
-
-    @Override
-    protected Jackson1BodyConverter createSutWithDisableFailOnUnknownProperties() {
-        return new Jackson1BodyConverter() {
-            @Override
-            protected void configure(ObjectMapper objectMapper) {
-                objectMapper.disable(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES);
-            }
-        };
-    }
-
-    @Override
-    protected Jackson1BodyConverter createSutWithEnableWriteEnumsUsingToString() {
-        return new Jackson1BodyConverter() {
-            @Override
-            protected void configure(ObjectMapper objectMapper) {
-                objectMapper.enable(Feature.WRITE_ENUMS_USING_TO_STRING);
-            }
-        };
-    }
-
-    @Override
-    protected Class<?> getUnrecognizedPropertyExceptionClass() {
-        return UnrecognizedPropertyException.class;
-    }
-
-    @Test
-    public void testWrite_json_failed(@Mocked final ObjectMapper mapper) throws Exception {
-        expectedException.expect(IllegalArgumentException.class);
-        expectedException.expectMessage("failed to write response.");
-
-        final TestBean bean = new TestBean("aaa",123L, true);
-        new Expectations() {{
-            jaxRsContext.getProducesMediaType();
-            result = "application/json;charset=utf-8";
-            mapper.writeValueAsString(bean);
-            result = new JsonMappingException("error");
-        }};
-
-        sut.write(bean, executionContext);
-    }
-}
diff --git a/nablarch-jackson-adaptor/src/test/java/nablarch/integration/jaxrs/jackson/JacksonBodyConverterTestSupport.java b/nablarch-jackson-adaptor/src/test/java/nablarch/integration/jaxrs/jackson/JacksonBodyConverterTestSupport.java
index 2130223..f2a6580 100644
--- a/nablarch-jackson-adaptor/src/test/java/nablarch/integration/jaxrs/jackson/JacksonBodyConverterTestSupport.java
+++ b/nablarch-jackson-adaptor/src/test/java/nablarch/integration/jaxrs/jackson/JacksonBodyConverterTestSupport.java
@@ -1,7 +1,7 @@
 package nablarch.integration.jaxrs.jackson;
 
-import mockit.Mocked;
 import mockit.Expectations;
+import mockit.Mocked;
 import nablarch.fw.ExecutionContext;
 import nablarch.fw.jaxrs.BodyConverterSupport;
 import nablarch.fw.jaxrs.JaxRsContext;
@@ -11,8 +11,6 @@
 import nablarch.fw.web.servlet.NablarchHttpServletRequestWrapper;
 import nablarch.fw.web.servlet.ServletExecutionContext;
 import nablarch.test.support.log.app.OnMemoryLogWriter;
-import org.codehaus.jackson.map.DeserializationConfig;
-import org.codehaus.jackson.map.SerializationConfig.Feature;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
@@ -27,7 +25,9 @@
 import java.nio.charset.UnsupportedCharsetException;
 
 import static javax.ws.rs.core.MediaType.APPLICATION_JSON;
-import static org.hamcrest.Matchers.*;
+import static org.hamcrest.Matchers.containsString;
+import static org.hamcrest.Matchers.instanceOf;
+import static org.hamcrest.Matchers.notNullValue;
 import static org.hamcrest.core.Is.is;
 import static org.junit.Assert.assertThat;
 import static org.junit.Assert.fail;