diff --git a/src/main/java/ybe/mini/travelserver/global/api/TourAPIProperties.java b/src/main/java/ybe/mini/travelserver/global/api/TourAPIProperties.java
index 58cb87f..ac9c442 100644
--- a/src/main/java/ybe/mini/travelserver/global/api/TourAPIProperties.java
+++ b/src/main/java/ybe/mini/travelserver/global/api/TourAPIProperties.java
@@ -2,11 +2,14 @@
 
 import lombok.AccessLevel;
 import lombok.NoArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 
+import java.util.List;
+
+@Slf4j
 @NoArgsConstructor(access = AccessLevel.PRIVATE)
 public class TourAPIProperties {
-    public static final String KEY_DECODED = "rKtD0jUO3f83Q/Q7QJ7yxo2GMBF489d4y5NM3H48uUffmUXjeoARqF4wmsICTBt3BVS988w8vG4Nh2UZtMV2/A==";
-    public static final String KEY_ENCODED = "rKtD0jUO3f83Q%2FQ7QJ7yxo2GMBF489d4y5NM3H48uUffmUXjeoARqF4wmsICTBt3BVS988w8vG4Nh2UZtMV2%2FA%3D%3D";
+    private static int keyIndex = 0;
     public static final String BASE_URL = "https://apis.data.go.kr/B551011/KorService1/";
 
     public static final String SEARCH_KEYWORD = "searchKeyword1";
@@ -15,4 +18,21 @@ public class TourAPIProperties {
     public static final String MOBILE_OS = "ETC";
     public static final String MOBILE_APP = "TravelAPP";
     public static final String RENDER_TYPE = "json";
+
+    private static final List<String> keyList = List.of(
+            System.getenv("TOUR_API_KEY_1"),
+            System.getenv("TOUR_API_KEY_2"),
+            System.getenv("TOUR_API_KEY_3"),
+            System.getenv("TOUR_API_KEY_4"),
+            System.getenv("TOUR_API_KEY_5")
+    );
+
+    public static String getEncodedKey() {
+        return keyList.get(keyIndex);
+    }
+
+    public static void changeNextKey() {
+        log.warn("API KEY를 변경합니다.");
+        TourAPIProperties.keyIndex = ++keyIndex % keyList.size();
+    }
 }
diff --git a/src/main/java/ybe/mini/travelserver/global/api/TourAPIUtils.java b/src/main/java/ybe/mini/travelserver/global/api/TourAPIUtils.java
index 6db0658..e9ca78a 100644
--- a/src/main/java/ybe/mini/travelserver/global/api/TourAPIUtils.java
+++ b/src/main/java/ybe/mini/travelserver/global/api/TourAPIUtils.java
@@ -54,7 +54,7 @@ private static StringBuilder buildCommonUrl(String endpoint) {
         url.append("&MobileApp=").append(MOBILE_APP);
         url.append("&_type=").append(RENDER_TYPE);
         url.append("&contentTypeId=").append(CONTENT_TYPE_ID);
-        url.append("&serviceKey=").append(KEY_ENCODED);
+        url.append("&serviceKey=").append(getEncodedKey());
 
         return url;
     }
@@ -78,7 +78,9 @@ private static <T> T fetchDataFromAPI(
                 clientHttpResponse -> {
                     MediaType contentType = clientHttpResponse.getHeaders().getContentType();
                     if (contentType != null && contentType.includes(MediaType.TEXT_XML)) {
-                        try {
+                        try (clientHttpResponse) {
+                            changeNextKey();
+
                             JAXBContext jaxbContext = JAXBContext.newInstance(TourAPIXMLErrorResponse.class);
                             Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
                             TourAPIXMLErrorResponse tourAPIXMLErrorResponse = (TourAPIXMLErrorResponse) unmarshaller.unmarshal(clientHttpResponse.getBody());