diff --git a/pom.xml b/pom.xml
index 534a491..ae78221 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
 	</parent>
 	<groupId>osm.surveyor.plateau</groupId>
 	<artifactId>task-bldg</artifactId>
-	<version>0.0.7</version>
+	<version>0.0.8</version>
 	<packaging>war</packaging>
 	<name>task-bldg</name>
 	<description>TaskingManager for Plateau BLDG</description>
diff --git a/src/main/java/osm/surveyor/task/city/CityController.java b/src/main/java/osm/surveyor/task/city/CityController.java
index 9af28d2..21f68c4 100644
--- a/src/main/java/osm/surveyor/task/city/CityController.java
+++ b/src/main/java/osm/surveyor/task/city/CityController.java
@@ -8,7 +8,6 @@
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.servlet.view.RedirectView;
 
 import lombok.RequiredArgsConstructor;
 import osm.surveyor.task.city.model.City;
@@ -50,11 +49,4 @@
 		repository.deleteByCitycode(citycode);
 		return "redirect:/city";
 	}
-
-	@GetMapping("/howto")
-	public RedirectView howto() {
-		RedirectView redirectView = new RedirectView();
-	    redirectView.setUrl("https://github.com/yuuhayashi/task-bldg/wiki");
-	    return redirectView;
-	}
 }
diff --git a/src/main/java/osm/surveyor/task/user/config/SecurityConfig.java b/src/main/java/osm/surveyor/task/user/config/SecurityConfig.java
index d15b9dd..476aa10 100644
--- a/src/main/java/osm/surveyor/task/user/config/SecurityConfig.java
+++ b/src/main/java/osm/surveyor/task/user/config/SecurityConfig.java
@@ -38,7 +38,7 @@
     		"/img/**",
     		"/data/**",
     		"/webjars/**",
-    		"/howto/**",
+    		"/howto",
     		"/h2-console/**"
         );
     }
diff --git a/src/main/resources/templates/fragments/sidebar.html b/src/main/resources/templates/fragments/sidebar.html
index dee8d7f..27dcd0b 100644
--- a/src/main/resources/templates/fragments/sidebar.html
+++ b/src/main/resources/templates/fragments/sidebar.html
@@ -55,7 +55,7 @@
               </a>
             </li>
             <li class="nav-item">
-              <a th:href="@{/howto}" class="nav-link text-white">
+              <a href="https://github.com/yuuhayashi/task-bldg/wiki" class="nav-link text-white">
                 <i class="bi bi-box-arrow-right me-2"></i>
                 使い方 (外部リンク)
               </a>