diff --git a/pom.xml b/pom.xml
index 6df8ad1..4207b8d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,10 +20,6 @@
         <webapp.lib>${basedir}/src/main/webapp/WEB-INF/lib</webapp.lib>
     </properties>
     <dependencies>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-data-jdbc</artifactId>
-        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-data-jpa</artifactId>
@@ -117,12 +113,11 @@
         </dependency>
         -->
 
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-devtools</artifactId>
-            <scope>runtime</scope>
-            <optional>true</optional>
-        </dependency>
+        <!--
+            DevTools는 IntelliJ 실행 클래스패스에서 POI가 포함한 Batik/Xalan JAR의
+            매니페스트를 재검사하며 존재하지 않는 상대 경로를 라이브러리 오류처럼 출력한다.
+            현재 프로젝트는 자동 재시작을 사용하지 않으므로 포함하지 않는다.
+        -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-configuration-processor</artifactId>
@@ -174,7 +169,6 @@
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-validation</artifactId>
-            <version>2.4.5</version>
         </dependency>
 
         <!-- https://mvnrepository.com/artifact/com.auth0/java-jwt -->
@@ -198,13 +192,6 @@
             <version>4.5.13</version>
         </dependency>
 
-        <!-- https://mvnrepository.com/artifact/org.mybatis.spring.boot/mybatis-spring-boot-starter -->
-        <dependency>
-            <groupId>org.mybatis.spring.boot</groupId>
-            <artifactId>mybatis-spring-boot-starter</artifactId>
-            <version>2.2.0</version>
-        </dependency>
-
         <!-- Pull in as a traditional dependency -->
         <dependency>
             <groupId>com.konghq</groupId>
@@ -217,19 +204,6 @@
             <groupId>javax.servlet</groupId>
             <artifactId>jstl</artifactId>
         </dependency>
-        <dependency>
-            <groupId>taglibs</groupId>
-            <artifactId>standard</artifactId>
-            <version>1.1.2</version>
-        </dependency>
-
-        <!-- https://mvnrepository.com/artifact/org.springframework.security/spring-security-taglibs -->
-        <dependency>
-            <groupId>org.springframework.security</groupId>
-            <artifactId>spring-security-taglibs</artifactId>
-            <version>5.5.0</version>
-        </dependency>
-
         <!-- DB Logback -->
         <dependency>
             <groupId>org.bgee.log4jdbc-log4j2</groupId>
diff --git a/src/main/resources/application-local.yml b/src/main/resources/application-local.yml
index f1a5356..0dae3d3 100644
--- a/src/main/resources/application-local.yml
+++ b/src/main/resources/application-local.yml
@@ -9,11 +9,6 @@ spring:
       encryptor:
         bean: jasyptStringEncryptor
 
-  devtools:
-    livereload:
-      enabled: true
-    restart:
-      enabled: false
   mail:
     host: smtp.mailplug.co.kr
     port: 465
@@ -72,4 +67,4 @@ lanedu:
   bill-return-smartro-url: "http://localhost:8080/pay/bill?userId="
   ssp-mall-id: "SMTSSPAY0p"
   smartro-js-url: "https://tpay.smartropay.co.kr/asset/js/SmartroPAY-1.0.min.js"
-  smartro-mjs-url: "https://tmpay.smartropay.co.kr/asset/js/SmartroPAY-1.0.min.js"
\ No newline at end of file
+  smartro-mjs-url: "https://tmpay.smartropay.co.kr/asset/js/SmartroPAY-1.0.min.js"
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 4881821..eee31e6 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -28,11 +28,16 @@ spring:
       max-file-size: 1GB
       max-request-size: 1GB
 
-mybatis:
-  mapper-locations: mybatis/**/*.xml
-  configuration:
-    map-underscore-to-camel-case: true
-    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
+# POI가 포함하는 Batik/Xalan은 JSP 태그 라이브러리가 아니며,
+# 해당 JAR의 배포용 Class-Path를 따라가면 존재하지 않는 상대 경로 경고가 발생한다.
+server:
+  tomcat:
+    additional-tld-skip-patterns:
+      - "batik-*.jar"
+      - "xalan-*.jar"
+      - "serializer-*.jar"
+      - "xml-apis*.jar"
+
 logging:
   level:
     root: info
@@ -43,5 +48,3 @@ lanedu:
   superpassword: aircode
   upload-file-extension: ".pdf, .doc, .docx, .xls, .xlsx, .ppt, .pptx, .jpg, .jpeg, .png, .gif, .avi, .flv, .mpg, .mpeg, .mkv, .mov, .mp3, .mp4, .wav, .wma, .hwp"
   authPhones: 01072276360,01073002291
-
- 
\ No newline at end of file
diff --git a/src/main/webapp/WEB-INF/view/include/sample/inc_body_footer.jsp b/src/main/webapp/WEB-INF/view/include/sample/inc_body_footer.jsp
index cb3014d..1893997 100644
--- a/src/main/webapp/WEB-INF/view/include/sample/inc_body_footer.jsp
+++ b/src/main/webapp/WEB-INF/view/include/sample/inc_body_footer.jsp
@@ -1,5 +1,4 @@
 <%@ page contentType="text/html;charset=UTF-8" %>
-<%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags"%>
 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
 
 <footer class="hidden-xs">
diff --git a/src/main/webapp/WEB-INF/view/include/sample/inc_body_header.jsp b/src/main/webapp/WEB-INF/view/include/sample/inc_body_header.jsp
index 4193e80..d7fd1ae 100644
--- a/src/main/webapp/WEB-INF/view/include/sample/inc_body_header.jsp
+++ b/src/main/webapp/WEB-INF/view/include/sample/inc_body_header.jsp
@@ -1,5 +1,4 @@
 <%@ page contentType="text/html;charset=UTF-8" %>
-<%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags"%>
 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
 <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
 <c:set var="urlPath" value="${requestScope['javax.servlet.forward.servlet_path']}" />
diff --git a/src/main/webapp/WEB-INF/view/include/sample/inc_body_sidebar.jsp b/src/main/webapp/WEB-INF/view/include/sample/inc_body_sidebar.jsp
index 5599f9a..7d5259c 100644
--- a/src/main/webapp/WEB-INF/view/include/sample/inc_body_sidebar.jsp
+++ b/src/main/webapp/WEB-INF/view/include/sample/inc_body_sidebar.jsp
@@ -1,5 +1,4 @@
 <%@ page contentType="text/html;charset=UTF-8" %>
-<%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags"%>
 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
 <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
 
@@ -13,4 +12,4 @@
         <a class="list-group-item list-group-item-action list-group-item-light p-3" href="#!">Profile</a>
         <a class="list-group-item list-group-item-action list-group-item-light p-3" href="#!">Status</a>
     </div>
-</div>
\ No newline at end of file
+</div>