diff --git a/src/main/java/com/fisa/pg/dto/response/ApiKeyResponseDto.java b/src/main/java/com/fisa/pg/dto/response/ApiKeyResponseDto.java
index bdd3ac0..799bcfa 100644
--- a/src/main/java/com/fisa/pg/dto/response/ApiKeyResponseDto.java
+++ b/src/main/java/com/fisa/pg/dto/response/ApiKeyResponseDto.java
@@ -59,6 +59,7 @@ public class ApiKeyResponseDto {
      */
     private LocalDateTime lastUsed;
 
+
     public static ApiKeyResponseDto from(ApiKey apiKey) {
         return ApiKeyResponseDto.builder()
                 .id(apiKey.getId())
@@ -69,6 +70,7 @@ public static ApiKeyResponseDto from(ApiKey apiKey) {
                 .isActive(apiKey.isActive())
                 .issuedAt(apiKey.getIssuedAt())
                 .expiresAt(apiKey.getExpiresAt())
+                .lastUsed(apiKey.getLastUsed())
                 .build();
     }
 
diff --git a/src/main/java/com/fisa/pg/entity/auth/ApiKey.java b/src/main/java/com/fisa/pg/entity/auth/ApiKey.java
index 18d8566..9b3e959 100644
--- a/src/main/java/com/fisa/pg/entity/auth/ApiKey.java
+++ b/src/main/java/com/fisa/pg/entity/auth/ApiKey.java
@@ -71,12 +71,24 @@ public class ApiKey {
     @Column(name = "is_active", nullable = false)
     private boolean isActive;
 
+    /**
+     * 마지막 사용 시각
+     */
+    @Column(name = "last_used", nullable = true)
+    private LocalDateTime lastUsed;
+
     /**
      * API 키 비활성화 메서드
      */
+
     public void deactivate() {
         this.isActive = false;
     }
 
-
-}
+    /**
+     * API 키 사용 시각 업데이트 메서드
+     */
+    public void updateLastUsed() {
+        this.lastUsed = LocalDateTime.now();
+    }
+}
\ No newline at end of file