diff --git a/src/timeline-service/src/main/resources/application.yml b/src/timeline-service/src/main/resources/application.yml
index c4424982..3cf6fd63 100644
--- a/src/timeline-service/src/main/resources/application.yml
+++ b/src/timeline-service/src/main/resources/application.yml
@@ -33,9 +33,9 @@ passport:
 
 eureka:
   instance:
-    hostname: 15.164.88.57
+    hostname: ${EUREKA_HOST}
   client:
     fetch-registry: true
     register-with-eureka: true
     service-url:
-      defaultZone: http://15.164.88.57:8761/eureka
+      defaultZone: ${EUREKA_DEFAULT_ZONE}