diff --git a/src/main/java/com/olympus/hermione/security/utility/JwtTokenProvider.java b/src/main/java/com/olympus/hermione/security/utility/JwtTokenProvider.java
index 248cec6..43bc5e2 100644
--- a/src/main/java/com/olympus/hermione/security/utility/JwtTokenProvider.java
+++ b/src/main/java/com/olympus/hermione/security/utility/JwtTokenProvider.java
@@ -21,7 +21,7 @@ public class JwtTokenProvider {
     Key key = Keys.secretKeyFor(SignatureAlgorithm.HS512);
     
 
-    public static final String SECRET = "5367566B59703373367639792F423F4528482B4D6251655468576D5A71347437";
+    public static final String SECRET = "5367566B59703373367639792F423F4528482B4D6251655468576D5A713474375367566B59703373367639792F423F4528482B4D6251655468576D5A71347437";
 
 
     private Key getSignKey() {
@@ -40,7 +40,8 @@ public class JwtTokenProvider {
             .setSubject(userDetails.getUsername())
             .setIssuedAt(new Date())
             .setExpiration(expiryDate)
-            .signWith(getSignKey(), SignatureAlgorithm.HS256)
+            .signWith(getSignKey(), SignatureAlgorithm.HS512)
+            //.signWith(SignatureAlgorithm.HS512, SECRET)
             .compact();
     }
 
@@ -83,5 +84,4 @@ public class JwtTokenProvider {
             .getBody()
             .getSubject();
     }
-}
-
+}
\ No newline at end of file