diff --git a/services/MemberProvider.ts b/services/MemberProvider.ts
index 35ee086..af81045 100644
--- a/services/MemberProvider.ts
+++ b/services/MemberProvider.ts
@@ -78,6 +78,15 @@ export class MemberProvider extends PrismaService implements IMemberProvider {
     return record && MemberProvider.getMemberFromRecord(record);
   }
 
+  public async findAnyInSystemBySlackId(slackId: string): Promise<Nullable<Member>> {
+    const record = await this.connection.memberRecord.findFirst({
+      where: { slackId },
+      include: { ...this.globalInclude },
+    });
+
+    return record && MemberProvider.getMemberFromRecord(record);
+  }
+
   public async getAll(): Promise<Member[]> {
     const records = await this.connection.memberRecord.findMany({
       where: { ...this.globalWhere },
diff --git a/services/MemberService.ts b/services/MemberService.ts
index 7b1d88e..215a890 100644
--- a/services/MemberService.ts
+++ b/services/MemberService.ts
@@ -84,6 +84,10 @@ export class MemberService implements IMemberService {
     return this.memberProvider.findBySlackId(slackId);
   }
 
+  public findAnyInSystemBySlackId(slackId: string): Promise<Nullable<Member>> {
+    return this.memberProvider.findAnyInSystemBySlackId(slackId);
+  }
+
   public getAll(): Promise<Member[]> {
     return this.memberProvider.getAll();
   }
@@ -175,7 +179,7 @@ export class MemberService implements IMemberService {
     const slackMembers = await this.slackMemberProvider.getAll();
 
     for (const member of slackMembers) {
-      const existing = await this.findBySlackId(member.id);
+      const existing = await this.findAnyInSystemBySlackId(member.id);
 
       if (existing) {
         existing.setName(member.name);
diff --git a/services/interfaces/IMemberProvider.ts b/services/interfaces/IMemberProvider.ts
index 8b3f24c..5b5be30 100644
--- a/services/interfaces/IMemberProvider.ts
+++ b/services/interfaces/IMemberProvider.ts
@@ -8,6 +8,8 @@ export interface IMemberProvider {
 
   findBySlackId(slackId: string): Promise<Nullable<Member>>;
 
+  findAnyInSystemBySlackId(slackId: string): Promise<Nullable<Member>>;
+
   getAll(): Promise<Member[]>;
 
   getAllCheckInNonNull(): Promise<Member[]>;