diff --git a/README.md b/README.md
index 0c1d11c..6969385 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@ Github list of [NomadCoders NomadStudy](https://nomadcoders.co/)
 | [Namyunha](https://nomadcoders.co/users/ajs998)                     | 남윤하            | [@Namyunha](https://github.com/Namyunha)        |
 | [notnormal8078](https://nomadcoders.co/users/notnormal8078)                     | 딘            | [@deanyoon](https://github.com/deanyoon)        |
 | [phsik3260](https://nomadcoders.co/users/phsik3260)                | 현식              | [@phsik3260](https://github.com/phsik3260)                   |
-| [sunyeong-jeong](https://nomadcoders.co/users/gardenia1109)        | SY               | [@gardenia0917](https://github.com/gardenia0917)              |
+| [sunyeong-jeong](https://nomadcoders.co/users/gardenia1109)        | SY               | [@calla1109](https://github.com/calla1109)              |
 | [YENA KWON](https://nomadcoders.co/users/ynkwon114ve29h)           | Yena Kwon        | [@beyondthedream](https://github.com/beyondthedream)         |
 | [zoocasso](https://nomadcoders.co/users/zoocasso)                  | zoocasso         | [@zoocasso](https://github.com/zoocasso)                     |
 | [김광윤](https://nomadcoders.co/users/leorivk)                       | null       | [@leorivk](https://github.com/leorivk)                       |
@@ -71,4 +71,4 @@ Github list of [NomadCoders NomadStudy](https://nomadcoders.co/)
 | [정혜인](https://nomadcoders.co/users/hijung1024)                    | Nini             | [@Heyyyin](https://github.com/Heyyyin)                       |
 | [조형석](https://nomadcoders.co/users/fluorjo)                       | 조형석            | [@fluorjo](https://github.com/fluorjo)                        |
 | [현진](https://nomadcoders.co/users/hyunjin0376)                    | 현진              | [@zinnli](https://github.com/zinnli)                          |
-| [형준](https://nomadcoders.co/users/hyeongjoon)                     | 형준              | [@Kim-Hyeong-joon](https://github.com/Kim-Hyeong-joon)        |
\ No newline at end of file
+| [형준](https://nomadcoders.co/users/hyeongjoon)                     | 형준              | [@Kim-Hyeong-joon](https://github.com/Kim-Hyeong-joon)        |
diff --git a/member/second.md b/member/second.md
index e996763..b189902 100644
--- a/member/second.md
+++ b/member/second.md
@@ -19,7 +19,7 @@ Github list of [NomadCoders NomadStudy](https://nomadcoders.co/)
 | [Kyuhyun Lee](https://nomadcoders.co/users/khlee1992)              | 난코              | [@Nanco-L](https://github.com/Nanco-L)                       |
 | [Namyunha](https://nomadcoders.co/users/ajs998)                     | 남윤하            | [@Namyunha](https://github.com/Namyunha)        |
 | [notnormal8078](https://nomadcoders.co/users/notnormal8078)                     | 딘            | [@deanyoon](https://github.com/deanyoon)        |
-| [sunyeong-jeong](https://nomadcoders.co/users/gardenia1109)        | SY               | [@gardenia0917](https://github.com/gardenia0917)             |
+| [sunyeong-jeong](https://nomadcoders.co/users/gardenia1109)        | SY               | [@calla1109](https://github.com/calla1109)             |
 | [김광윤](https://nomadcoders.co/users/leorivk)                       | null       | [@leorivk](https://github.com/leorivk)                       |
 | [김재원](https://nomadcoders.co/users/wodnjs3580-B7nYpr)                     | 김재원             | [@Jaewon94](https://github.com/Jaewon94)        |
 | [이승아](https://nomadcoders.co/users/lsa3117)                     | 승아             | [@seunga-lee](https://github.com/seunga-lee)        |