diff --git a/components/CollectionCard.tsx b/components/CollectionCard.tsx
index ffde8ee..34c8cd0 100644
--- a/components/CollectionCard.tsx
+++ b/components/CollectionCard.tsx
@@ -17,7 +17,7 @@ import ImageWithFallback from "./ImageWithFallback";
 import Dropdown from "./Dropdown";
 import { useState } from "react";
 import Modal from "@/components/Modal";
-import EditCollection from "@/components/Modal/EditCollection";
+import CollectionModal from "@/components/Modal/CollectionModal";
 import DeleteCollection from "@/components/Modal/DeleteCollection";
 
 export default function ({
@@ -26,13 +26,14 @@ export default function ({
   collection: CollectionIncludingMembers;
 }) {
   const { links } = useLinkStore();
-  const formattedDate = new Date(
-    collection.createdAt as unknown as string
-  ).toLocaleString("en-US", {
-    year: "numeric",
-    month: "short",
-    day: "numeric",
-  });
+  const formattedDate = new Date(collection.createdAt as string).toLocaleString(
+    "en-US",
+    {
+      year: "numeric",
+      month: "short",
+      day: "numeric",
+    }
+  );
 
   const [expandDropdown, setExpandDropdown] = useState(false);
   const [editCollectionModal, setEditCollectionModal] = useState(false);
@@ -129,9 +130,10 @@ export default function ({
 
       {editCollectionModal ? (
         <Modal toggleModal={toggleEditCollectionModal}>
-          <EditCollection
+          <CollectionModal
             toggleCollectionModal={toggleEditCollectionModal}
             activeCollection={collection}
+            method="UPDATE"
           />
         </Modal>
       ) : null}
diff --git a/components/Modal/ChangePassword.tsx b/components/Modal/ChangePassword.tsx
index 110315e..a719f74 100644
--- a/components/Modal/ChangePassword.tsx
+++ b/components/Modal/ChangePassword.tsx
@@ -12,7 +12,7 @@ type Props = {
   setPasswordForm: Function;
 };
 
-export default function AddCollection({
+export default function ChangePassword({
   togglePasswordFormModal,
   user,
   setPasswordForm,
diff --git a/components/Modal/AddCollection.tsx b/components/Modal/CollectionModal.tsx
similarity index 77%
rename from components/Modal/AddCollection.tsx
rename to components/Modal/CollectionModal.tsx
index 00157c5..989ea72 100644
--- a/components/Modal/AddCollection.tsx
+++ b/components/Modal/CollectionModal.tsx
@@ -3,34 +3,38 @@
 // This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 // You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 
-import React, { useEffect, useState } from "react";
+import React, { useState } from "react";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import {
   faClose,
-  faPlus,
+  faPenToSquare,
+  faTrashCan,
   faUser,
   faUserPlus,
 } from "@fortawesome/free-solid-svg-icons";
 import useCollectionStore from "@/store/collections";
 import { CollectionIncludingMembers, Member } from "@/types/global";
 import { useSession } from "next-auth/react";
+import Modal from "@/components/Modal";
+import DeleteCollection from "@/components/Modal/DeleteCollection";
 import RequiredBadge from "../RequiredBadge";
 import addMemberToCollection from "@/lib/client/addMemberToCollection";
 import ImageWithFallback from "../ImageWithFallback";
+import Checkbox from "../Checkbox";
 
 type Props = {
   toggleCollectionModal: Function;
+  activeCollection: CollectionIncludingMembers;
+  method: "CREATE" | "UPDATE";
 };
 
-export default function AddCollection({ toggleCollectionModal }: Props) {
-  const session = useSession();
-
-  const [collection, setCollection] = useState<CollectionIncludingMembers>({
-    name: "",
-    description: "",
-    ownerId: session.data?.user.id as number,
-    members: [],
-  });
+export default function CollectionModal({
+  toggleCollectionModal,
+  activeCollection,
+  method,
+}: Props) {
+  const [collection, setCollection] =
+    useState<CollectionIncludingMembers>(activeCollection);
 
   const [member, setMember] = useState<Member>({
     canCreate: false,
@@ -42,16 +46,16 @@ export default function AddCollection({ toggleCollectionModal }: Props) {
     },
   });
 
-  const { addCollection } = useCollectionStore();
+  const { updateCollection, addCollection } = useCollectionStore();
 
-  const submit = async () => {
-    if (!collection) return null;
+  const [deleteCollectionModal, setDeleteCollectionModal] = useState(false);
 
-    const response = await addCollection(collection);
-
-    if (response) toggleCollectionModal();
+  const toggleDeleteCollectionModal = () => {
+    setDeleteCollectionModal(!deleteCollectionModal);
   };
 
+  const session = useSession();
+
   const setMemberState = (newMember: Member) => {
     if (!collection) return null;
 
@@ -71,9 +75,23 @@ export default function AddCollection({ toggleCollectionModal }: Props) {
     });
   };
 
+  const submit = async () => {
+    if (!collection) return null;
+
+    let response = null;
+
+    if (method === "CREATE") response = await updateCollection(collection);
+    else if (method === "UPDATE") response = await addCollection(collection);
+    else console.log("Unknown method.");
+
+    if (response) toggleCollectionModal();
+  };
+
   return (
     <div className="flex flex-col gap-3 sm:w-[35rem] w-80">
-      <p className="text-xl text-sky-500 mb-2 text-center">New Collection</p>
+      <p className="text-xl text-sky-500 mb-2 text-center">
+        {method === "CREATE" ? "Add" : "Edit"} Collection
+      </p>
 
       <div className="flex flex-col sm:flex-row gap-3">
         <div className="w-full">
@@ -109,9 +127,27 @@ export default function AddCollection({ toggleCollectionModal }: Props) {
         </div>
       </div>
 
-      <hr className="border rounded my-2" />
+      <hr className="my-2" />
+
+      {/* <p className="text-sky-600">Sharing & Collaboration Settings</p>
+
+      <p className="text-sm font-bold text-sky-300">Collaboration</p>
+
+      <div className="w-fit">
+        <div className="border border-sky-100 rounded-md bg-white px-2 py-1 text-center select-none cursor-pointer text-sky-900 duration-100 hover:border-sky-500">
+          Manage Team
+        </div>
+      </div>
+
+      <Checkbox
+        label="Make this a public collection."
+        state={true}
+        onClick={() => console.log("Clicked!")}
+      />
+      <p className="text-gray-500 text-sm">
+        This will let anyone to access this collection.
+      </p> */}
 
-      <p className="text-sm font-bold text-sky-300">Members</p>
       <div className="relative">
         <input
           value={member.user.email}
@@ -130,7 +166,7 @@ export default function AddCollection({ toggleCollectionModal }: Props) {
           onClick={() =>
             addMemberToCollection(
               session.data?.user.email as string,
-              member.user.email as string,
+              member.user.email,
               collection,
               setMemberState
             )
@@ -140,7 +176,6 @@ export default function AddCollection({ toggleCollectionModal }: Props) {
           <FontAwesomeIcon icon={faUserPlus} className="w-6 h-6" />
         </div>
       </div>
-
       {collection?.members[0]?.user ? (
         <>
           <p className="text-center text-gray-500 text-xs sm:text-sm">
@@ -284,13 +319,41 @@ export default function AddCollection({ toggleCollectionModal }: Props) {
         </>
       ) : null}
 
-      <div
-        className="mx-auto mt-2 bg-sky-500 text-white flex items-center gap-2 py-2 px-5 rounded-md select-none font-bold cursor-pointer duration-100 hover:bg-sky-400"
-        onClick={submit}
-      >
-        <FontAwesomeIcon icon={faPlus} className="h-5" />
-        Add Collection
+      <div className="flex flex-col justify-center items-center gap-2 mt-2">
+        <div
+          className="bg-sky-500 text-white flex items-center gap-2 py-2 px-5 rounded-md select-none font-bold cursor-pointer duration-100 hover:bg-sky-400"
+          onClick={submit}
+        >
+          <FontAwesomeIcon icon={faPenToSquare} className="h-5" />
+          Edit Collection
+        </div>
+
+        <div className="flex items-center justify-center gap-2">
+          <hr className="w-16 border" />
+
+          <p className="text-gray-400 font-bold">OR</p>
+
+          <hr className="w-16 border" />
+        </div>
+
+        <div
+          onClick={() => {
+            toggleDeleteCollectionModal();
+          }}
+          className="w-fit inline-flex rounded-md cursor-pointer bg-red-500 hover:bg-red-400 duration-100 p-2"
+        >
+          <FontAwesomeIcon icon={faTrashCan} className="w-4 h-4 text-white" />
+        </div>
       </div>
+
+      {deleteCollectionModal ? (
+        <Modal toggleModal={toggleDeleteCollectionModal}>
+          <DeleteCollection
+            collection={collection}
+            toggleDeleteCollectionModal={toggleDeleteCollectionModal}
+          />
+        </Modal>
+      ) : null}
     </div>
   );
 }
diff --git a/components/Modal/DeleteCollection.tsx b/components/Modal/DeleteCollection.tsx
index 0cd8dde..a658f21 100644
--- a/components/Modal/DeleteCollection.tsx
+++ b/components/Modal/DeleteCollection.tsx
@@ -5,7 +5,7 @@
 
 import React, { useState } from "react";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
-import { faPlus, faTrashCan } from "@fortawesome/free-solid-svg-icons";
+import { faTrashCan } from "@fortawesome/free-solid-svg-icons";
 import { CollectionIncludingMembers } from "@/types/global";
 import useCollectionStore from "@/store/collections";
 import { useRouter } from "next/router";
@@ -15,7 +15,7 @@ type Props = {
   collection: CollectionIncludingMembers;
 };
 
-export default function AddCollection({
+export default function DeleteCollection({
   toggleDeleteCollectionModal,
   collection,
 }: Props) {
diff --git a/components/Modal/EditCollection.tsx b/components/Modal/EditCollection.tsx
deleted file mode 100644
index 96e02bd..0000000
--- a/components/Modal/EditCollection.tsx
+++ /dev/null
@@ -1,345 +0,0 @@
-// Copyright (C) 2022-present Daniel31x13 <daniel31x13@gmail.com>
-// This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3.
-// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
-// You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
-
-import React, { useState } from "react";
-import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
-import {
-  faClose,
-  faPenToSquare,
-  faTrashCan,
-  faUser,
-  faUserPlus,
-} from "@fortawesome/free-solid-svg-icons";
-import useCollectionStore from "@/store/collections";
-import { CollectionIncludingMembers, Member } from "@/types/global";
-import { useSession } from "next-auth/react";
-import Modal from "@/components/Modal";
-import DeleteCollection from "@/components/Modal/DeleteCollection";
-import RequiredBadge from "../RequiredBadge";
-import addMemberToCollection from "@/lib/client/addMemberToCollection";
-import ImageWithFallback from "../ImageWithFallback";
-import Checkbox from "../Checkbox";
-
-type Props = {
-  toggleCollectionModal: Function;
-  activeCollection: CollectionIncludingMembers;
-};
-
-export default function EditCollection({
-  toggleCollectionModal,
-  activeCollection,
-}: Props) {
-  const [collection, setCollection] =
-    useState<CollectionIncludingMembers>(activeCollection);
-
-  const [member, setMember] = useState<Member>({
-    canCreate: false,
-    canUpdate: false,
-    canDelete: false,
-    user: {
-      name: "",
-      email: "",
-    },
-  });
-
-  const { updateCollection } = useCollectionStore();
-
-  const [deleteCollectionModal, setDeleteCollectionModal] = useState(false);
-
-  const toggleDeleteCollectionModal = () => {
-    setDeleteCollectionModal(!deleteCollectionModal);
-  };
-
-  const session = useSession();
-
-  const setMemberState = (newMember: Member) => {
-    if (!collection) return null;
-
-    setCollection({
-      ...collection,
-      members: [...collection.members, newMember],
-    });
-
-    setMember({
-      canCreate: false,
-      canUpdate: false,
-      canDelete: false,
-      user: {
-        name: "",
-        email: "",
-      },
-    });
-  };
-
-  const submit = async () => {
-    if (!collection) return null;
-
-    const response = await updateCollection(collection);
-
-    if (response) toggleCollectionModal();
-  };
-
-  return (
-    <div className="flex flex-col gap-3 sm:w-[35rem] w-80">
-      <p className="text-xl text-sky-500 mb-2 text-center">Edit Collection</p>
-
-      <div className="flex flex-col sm:flex-row gap-3">
-        <div className="w-full">
-          <p className="text-sm font-bold text-sky-300 mb-2">
-            Name
-            <RequiredBadge />
-          </p>
-          <input
-            value={collection.name}
-            onChange={(e) =>
-              setCollection({ ...collection, name: e.target.value })
-            }
-            type="text"
-            placeholder="e.g. Example Collection"
-            className="w-full rounded-md p-3 border-sky-100 border-solid border outline-none focus:border-sky-500 duration-100"
-          />
-        </div>
-
-        <div className="w-full">
-          <p className="text-sm font-bold text-sky-300 mb-2">Description</p>
-          <input
-            value={collection.description}
-            onChange={(e) =>
-              setCollection({
-                ...collection,
-                description: e.target.value,
-              })
-            }
-            type="text"
-            placeholder="Collection description"
-            className="w-full rounded-md p-3 border-sky-100 border-solid border outline-none focus:border-sky-500 duration-100"
-          />
-        </div>
-      </div>
-
-      <hr className="my-2" />
-
-      {/* <p className="text-sky-600">Sharing & Collaboration Settings</p>
-
-      <p className="text-sm font-bold text-sky-300">Collaboration</p>
-
-      <div className="w-fit">
-        <div className="border border-sky-100 rounded-md bg-white px-2 py-1 text-center select-none cursor-pointer text-sky-900 duration-100 hover:border-sky-500">
-          Manage Team
-        </div>
-      </div>
-
-      <Checkbox
-        label="Make this a public collection."
-        state={true}
-        onClick={() => console.log("Clicked!")}
-      />
-      <p className="text-gray-500 text-sm">
-        This will let anyone to access this collection.
-      </p> */}
-
-      <div className="relative">
-        <input
-          value={member.user.email}
-          onChange={(e) => {
-            setMember({
-              ...member,
-              user: { ...member.user, email: e.target.value },
-            });
-          }}
-          type="text"
-          placeholder="Email"
-          className="w-full rounded-md p-3 pr-12 border-sky-100 border-solid border outline-none focus:border-sky-500 duration-100"
-        />
-
-        <div
-          onClick={() =>
-            addMemberToCollection(
-              session.data?.user.email as string,
-              member.user.email,
-              collection,
-              setMemberState
-            )
-          }
-          className="absolute flex items-center justify-center right-2 top-2 bottom-2 bg-sky-500 hover:bg-sky-400 duration-100 text-white w-9 rounded-md cursor-pointer"
-        >
-          <FontAwesomeIcon icon={faUserPlus} className="w-6 h-6" />
-        </div>
-      </div>
-      {collection.members[0] ? (
-        <p className="text-center text-gray-500 text-xs sm:text-sm">
-          (All Members have <b>Read</b> access to this collection.)
-        </p>
-      ) : null}
-
-      <div className="h-36 overflow-auto flex flex-col gap-3 rounded-md shadow-inner">
-        {collection.members.map((e, i) => {
-          return (
-            <div
-              key={i}
-              className="relative border p-2 rounded-md border-sky-100 flex flex-col sm:flex-row sm:items-center gap-2 justify-between"
-            >
-              <FontAwesomeIcon
-                icon={faClose}
-                className="absolute right-2 top-2 text-gray-500 h-4 hover:text-red-500 duration-100 cursor-pointer"
-                title="Remove Member"
-                onClick={() => {
-                  const updatedMembers = collection.members.filter((member) => {
-                    return member.user.email !== e.user.email;
-                  });
-                  setCollection({
-                    ...collection,
-                    members: updatedMembers,
-                  });
-                }}
-              />
-              <div className="flex items-center gap-2">
-                <ImageWithFallback
-                  key={i}
-                  src={`/api/avatar/${e.userId}`}
-                  className="h-10 w-10 shadow rounded-full border-[3px] border-sky-100"
-                >
-                  <div className="text-white bg-sky-500 h-10 w-10 shadow rounded-full border-[3px] border-sky-100 flex items-center justify-center">
-                    <FontAwesomeIcon icon={faUser} className="w-5 h-5" />
-                  </div>
-                </ImageWithFallback>
-                <div>
-                  <p className="text-sm font-bold text-sky-500">
-                    {e.user.name}
-                  </p>
-                  <p className="text-sky-900">{e.user.email}</p>
-                </div>
-              </div>
-              <div className="flex sm:block items-center gap-5">
-                <div>
-                  <p className="font-bold text-sm text-gray-500">Permissions</p>
-                  <p className="text-xs text-gray-400 mb-2">
-                    (Click to toggle.)
-                  </p>
-                </div>
-
-                <div>
-                  <label className="cursor-pointer mr-1">
-                    <input
-                      type="checkbox"
-                      id="canCreate"
-                      className="peer sr-only"
-                      checked={e.canCreate}
-                      onChange={() => {
-                        const updatedMembers = collection.members.map(
-                          (member) => {
-                            if (member.user.email === e.user.email) {
-                              return { ...member, canCreate: !e.canCreate };
-                            }
-                            return member;
-                          }
-                        );
-                        setCollection({
-                          ...collection,
-                          members: updatedMembers,
-                        });
-                      }}
-                    />
-                    <span className="text-sky-900 peer-checked:bg-sky-500 text-sm hover:bg-sky-200 duration-75 peer-checked:text-white rounded p-1 select-none">
-                      Create
-                    </span>
-                  </label>
-
-                  <label className="cursor-pointer mr-1">
-                    <input
-                      type="checkbox"
-                      id="canUpdate"
-                      className="peer sr-only"
-                      checked={e.canUpdate}
-                      onChange={() => {
-                        const updatedMembers = collection.members.map(
-                          (member) => {
-                            if (member.user.email === e.user.email) {
-                              return { ...member, canUpdate: !e.canUpdate };
-                            }
-                            return member;
-                          }
-                        );
-                        setCollection({
-                          ...collection,
-                          members: updatedMembers,
-                        });
-                      }}
-                    />
-                    <span className="text-sky-900 peer-checked:bg-sky-500 text-sm hover:bg-sky-200 duration-75 peer-checked:text-white rounded p-1 select-none">
-                      Update
-                    </span>
-                  </label>
-
-                  <label className="cursor-pointer mr-1">
-                    <input
-                      type="checkbox"
-                      id="canDelete"
-                      className="peer sr-only"
-                      checked={e.canDelete}
-                      onChange={() => {
-                        const updatedMembers = collection.members.map(
-                          (member) => {
-                            if (member.user.email === e.user.email) {
-                              return { ...member, canDelete: !e.canDelete };
-                            }
-                            return member;
-                          }
-                        );
-                        setCollection({
-                          ...collection,
-                          members: updatedMembers,
-                        });
-                      }}
-                    />
-                    <span className="text-sky-900 peer-checked:bg-sky-500 text-sm hover:bg-sky-200 duration-75 peer-checked:text-white rounded p-1 select-none">
-                      Delete
-                    </span>
-                  </label>
-                </div>
-              </div>
-            </div>
-          );
-        })}
-      </div>
-
-      <div className="flex flex-col justify-center items-center gap-2 mt-2">
-        <div
-          className="bg-sky-500 text-white flex items-center gap-2 py-2 px-5 rounded-md select-none font-bold cursor-pointer duration-100 hover:bg-sky-400"
-          onClick={submit}
-        >
-          <FontAwesomeIcon icon={faPenToSquare} className="h-5" />
-          Edit Collection
-        </div>
-
-        <div className="flex items-center justify-center gap-2">
-          <hr className="w-16 border" />
-
-          <p className="text-gray-400 font-bold">OR</p>
-
-          <hr className="w-16 border" />
-        </div>
-
-        <div
-          onClick={() => {
-            toggleDeleteCollectionModal();
-          }}
-          className="w-fit inline-flex rounded-md cursor-pointer bg-red-500 hover:bg-red-400 duration-100 p-2"
-        >
-          <FontAwesomeIcon icon={faTrashCan} className="w-4 h-4 text-white" />
-        </div>
-      </div>
-
-      {deleteCollectionModal ? (
-        <Modal toggleModal={toggleDeleteCollectionModal}>
-          <DeleteCollection
-            collection={collection}
-            toggleDeleteCollectionModal={toggleDeleteCollectionModal}
-          />
-        </Modal>
-      ) : null}
-    </div>
-  );
-}
diff --git a/pages/collections/[id].tsx b/pages/collections/[id].tsx
index 59b2d17..ae27ef6 100644
--- a/pages/collections/[id].tsx
+++ b/pages/collections/[id].tsx
@@ -7,7 +7,7 @@ import Dropdown from "@/components/Dropdown";
 import LinkList from "@/components/LinkList";
 import Modal from "@/components/Modal";
 import AddLink from "@/components/Modal/AddLink";
-import EditCollection from "@/components/Modal/EditCollection";
+import CollectionModal from "@/components/Modal/CollectionModal";
 import DeleteCollection from "@/components/Modal/DeleteCollection";
 import useCollectionStore from "@/store/collections";
 import useLinkStore from "@/store/links";
@@ -284,9 +284,10 @@ export default function () {
 
                 {editCollectionModal && activeCollection ? (
                   <Modal toggleModal={toggleEditCollectionModal}>
-                    <EditCollection
+                    <CollectionModal
                       toggleCollectionModal={toggleEditCollectionModal}
                       activeCollection={activeCollection}
+                      method="UPDATE"
                     />
                   </Modal>
                 ) : null}
diff --git a/pages/collections/index.tsx b/pages/collections/index.tsx
index e2960cf..29a19f4 100644
--- a/pages/collections/index.tsx
+++ b/pages/collections/index.tsx
@@ -16,10 +16,11 @@ import CollectionCard from "@/components/CollectionCard";
 import Dropdown from "@/components/Dropdown";
 import { ChangeEvent, useEffect, useState } from "react";
 import Modal from "@/components/Modal";
-import AddCollection from "@/components/Modal/AddCollection";
 import MainLayout from "@/layouts/MainLayout";
 import ClickAwayHandler from "@/components/ClickAwayHandler";
 import RadioButton from "@/components/RadioButton";
+import CollectionModal from "@/components/Modal/CollectionModal";
+import { useSession } from "next-auth/react";
 
 export default function () {
   const { collections } = useCollectionStore();
@@ -30,6 +31,8 @@ export default function () {
 
   const [collectionModal, setCollectionModal] = useState(false);
 
+  const session = useSession();
+
   const toggleCollectionModal = () => {
     setCollectionModal(!collectionModal);
   };
@@ -65,14 +68,16 @@ export default function () {
       setSortedCollections(
         collectionsArray.sort(
           (a, b) =>
-            new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime()
+            new Date(b.createdAt as string).getTime() -
+            new Date(a.createdAt as string).getTime()
         )
       );
     else if (sortBy === "Date (Oldest First)")
       setSortedCollections(
         collectionsArray.sort(
           (a, b) =>
-            new Date(a.createdAt).getTime() - new Date(b.createdAt).getTime()
+            new Date(a.createdAt as string).getTime() -
+            new Date(b.createdAt as string).getTime()
         )
       );
   }, [collections, sortBy]);
@@ -210,7 +215,16 @@ export default function () {
 
       {collectionModal ? (
         <Modal toggleModal={toggleCollectionModal}>
-          <AddCollection toggleCollectionModal={toggleCollectionModal} />
+          <CollectionModal
+            activeCollection={{
+              name: "",
+              description: "",
+              ownerId: session.data?.user.id as number,
+              members: [],
+            }}
+            toggleCollectionModal={toggleCollectionModal}
+            method="CREATE"
+          />
         </Modal>
       ) : null}
     </MainLayout>
diff --git a/types/global.ts b/types/global.ts
index 61e1f65..77822e8 100644
--- a/types/global.ts
+++ b/types/global.ts
@@ -48,7 +48,7 @@ export interface Member {
 export interface CollectionIncludingMembers
   extends Omit<Collection, "id" | "createdAt"> {
   id?: number;
-  createdAt?: Date;
+  createdAt?: string;
   members: Member[];
 }