diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index cd7e690..45a2c78 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -58,7 +58,7 @@ model ProjectMember {
   projectId String
   userId    String
   role      Role      @default(USER)
-  project   Project   @relation(fields: [projectId], references: [id])
+  project   Project   @relation(fields: [projectId], references: [id], onDelete: Cascade)
   user      User      @relation(fields: [userId], references: [id])
   createdAt DateTime  @default(now())
   updatedAt DateTime  @updatedAt
diff --git a/src/actions/projects/deleteProject/logic.ts b/src/actions/projects/deleteProject/logic.ts
index 31d04b7..3ce3e01 100644
--- a/src/actions/projects/deleteProject/logic.ts
+++ b/src/actions/projects/deleteProject/logic.ts
@@ -1,13 +1,17 @@
 import 'server-only';
 
 import { prisma } from '@/lib/prisma';
-import { Result, success } from '@/lib/result';
+import { Result, success, err } from '@/lib/result';
 import { DeleteProjectInput } from './schema';
 
 export async function deleteProject(input: DeleteProjectInput): Promise<Result<undefined>> {
-  await prisma.project.delete({
-    where: { id: input.id }
-  });
-
-  return success(undefined);
+  try {
+    await prisma.project.deleteMany({
+      where: { id: input.id }
+    });
+    return success(undefined);
+  } catch (error) {
+    console.error("Failed to delete project:", error);
+    return err("Failed to delete project due to an unexpected error.");
+  }
 }