diff --git a/src/main/java/com/beat/global/auth/jwt/provider/JwtTokenProvider.java b/src/main/java/com/beat/global/auth/jwt/provider/JwtTokenProvider.java
index 749bfe2e..1aac0d78 100644
--- a/src/main/java/com/beat/global/auth/jwt/provider/JwtTokenProvider.java
+++ b/src/main/java/com/beat/global/auth/jwt/provider/JwtTokenProvider.java
@@ -27,12 +27,10 @@ public class JwtTokenProvider {
     private long REFRESH_TOKEN_EXPIRE_TIME;
 
     private static final String MEMBER_ID = "memberId";
-    private SecretKey secretKey;
 
     @PostConstruct
     protected void init() {
-        byte[] keyBytes = Base64.getEncoder().encode(JWT_SECRET.getBytes(StandardCharsets.UTF_8));
-        this.secretKey = Keys.hmacShaKeyFor(keyBytes);
+        JWT_SECRET = Base64.getEncoder().encodeToString(JWT_SECRET.getBytes(StandardCharsets.UTF_8));
     }
 
     public String issueAccessToken(final Authentication authentication) {
@@ -54,10 +52,15 @@ private String issueToken(final Authentication authentication, final long expire
         return Jwts.builder()
                 .setHeaderParam(Header.TYPE, Header.JWT_TYPE)
                 .setClaims(claims)
-                .signWith(secretKey)
+                .signWith(getSigningKey())
                 .compact();
     }
 
+    private SecretKey getSigningKey() {
+        String encodedKey = Base64.getEncoder().encodeToString(JWT_SECRET.getBytes()); //SecretKey 통해 서명 생성
+        return Keys.hmacShaKeyFor(encodedKey.getBytes());   //일반적으로 HMAC (Hash-based Message Authentication Code) 알고리즘 사용
+    }
+
     public JwtValidationType validateToken(String token) {
         try {
             Claims claims = getBody(token);
@@ -76,7 +79,7 @@ public JwtValidationType validateToken(String token) {
 
     private Claims getBody(final String token) {
         return Jwts.parserBuilder()
-                .setSigningKey(secretKey)
+                .setSigningKey(getSigningKey())
                 .build()
                 .parseClaimsJws(token)
                 .getBody();
diff --git a/src/main/resources/application-dev.yml b/src/main/resources/application-dev.yml
index cd963466..95949472 100644
--- a/src/main/resources/application-dev.yml
+++ b/src/main/resources/application-dev.yml
@@ -14,7 +14,7 @@ spring:
     
   jpa:
     hibernate:
-      ddl-auto: create
+      ddl-auto: update
     show-sql: true
     properties:
       hibernate:
@@ -23,7 +23,7 @@ spring:
 
   data:
     redis:
-      host: localhost
+      host: ${DEV_REDIS_HOST}
       port: 6379
 
   security:
diff --git a/src/main/resources/application-prod.yml b/src/main/resources/application-prod.yml
index ee4fb9e4..3b21c334 100644
--- a/src/main/resources/application-prod.yml
+++ b/src/main/resources/application-prod.yml
@@ -13,8 +13,8 @@ spring:
     password: ${PROD_DB_PASSWORD}
   jpa:
     hibernate:
-      ddl-auto: create
-    show-sql: false
+      ddl-auto: update
+    show-sql: true
     properties:
       hibernate:
         dialect: org.hibernate.dialect.MySQLDialect
@@ -22,7 +22,7 @@ spring:
 
   data:
     redis:
-      host: localhost
+      host: ${PROD_REDIS_HOST}
       port: 6379
 
   security: