diff --git a/api/src/main/java/hexagonal/api/member/application/port/out/FindMemberPort.java b/api/src/main/java/hexagonal/api/member/application/port/out/FindMemberPort.java
index d38a961..024b4ba 100644
--- a/api/src/main/java/hexagonal/api/member/application/port/out/FindMemberPort.java
+++ b/api/src/main/java/hexagonal/api/member/application/port/out/FindMemberPort.java
@@ -1,4 +1,8 @@
 package hexagonal.api.member.application.port.out;
 
-public class FindMemberPort {
+import hexagonal.core.domain.jpa.MemberJpaEntity;
+
+public interface FindMemberPort {
+
+    MemberJpaEntity findMember(String email);
 }