diff --git a/packages/core/package.json b/packages/core/package.json
index f6e2e7da..8fc7daaf 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -112,6 +112,7 @@
     "gray-matter": "4.0.3",
     "history": "5.3.0",
     "immer": "10.0.1",
+    "immutable": "4.3.4",
     "ini": "4.1.0",
     "is-hotkey": "0.2.0",
     "js-base64": "3.7.5",
diff --git a/packages/core/src/backend.ts b/packages/core/src/backend.ts
index 05e9a3b5..4e77a5dc 100644
--- a/packages/core/src/backend.ts
+++ b/packages/core/src/backend.ts
@@ -3,7 +3,6 @@ import attempt from 'lodash/attempt';
 import flatten from 'lodash/flatten';
 import get from 'lodash/get';
 import isError from 'lodash/isError';
-import set from 'lodash/set';
 import uniq from 'lodash/uniq';
 import { dirname } from 'path';
 
@@ -49,6 +48,7 @@ import { DRAFT_MEDIA_FILES, selectMediaFilePublicPath } from './lib/util/media.u
 import { selectCustomPath, slugFromCustomPath } from './lib/util/nested.util';
 import { isNullish } from './lib/util/null.util';
 import { fileSearch, sortByScore } from './lib/util/search.util';
+import set from './lib/util/set.util';
 import { dateParsers, expandPath, extractTemplateVars } from './lib/widgets/stringTemplate';
 import createEntry from './valueObjects/createEntry';
 
diff --git a/packages/core/src/lib/formatters.ts b/packages/core/src/lib/formatters.ts
index 53e12505..3e997150 100644
--- a/packages/core/src/lib/formatters.ts
+++ b/packages/core/src/lib/formatters.ts
@@ -1,10 +1,10 @@
 import get from 'lodash/get';
-import set from 'lodash/set';
 
 import { COMMIT_AUTHOR, COMMIT_DATE } from '../constants/commitProps';
 import { sanitizeSlug } from './urlHelper';
 import { selectIdentifier, selectInferredField } from './util/collection.util';
 import { selectField } from './util/field.util';
+import set from './util/set.util';
 import { isEmpty } from './util/string.util';
 import {
   addFileTemplateFields,
diff --git a/packages/core/src/lib/i18n.ts b/packages/core/src/lib/i18n.ts
index 607ca2ca..303e22de 100644
--- a/packages/core/src/lib/i18n.ts
+++ b/packages/core/src/lib/i18n.ts
@@ -1,9 +1,9 @@
 import escapeRegExp from 'lodash/escapeRegExp';
 import get from 'lodash/get';
 import groupBy from 'lodash/groupBy';
-import set from 'lodash/set';
 
 import { fileForEntry, selectEntrySlug } from './util/collection.util';
+import set from './util/set.util';
 
 import type {
   BaseField,
diff --git a/packages/core/src/lib/util/set.util.ts b/packages/core/src/lib/util/set.util.ts
new file mode 100644
index 00000000..b09249f9
--- /dev/null
+++ b/packages/core/src/lib/util/set.util.ts
@@ -0,0 +1,5 @@
+import { setIn } from 'immutable';
+
+export default function set<T>(object: T, path: string, value: unknown): T {
+  return setIn(object, path.split('.'), value);
+}
diff --git a/packages/core/src/reducers/entries.ts b/packages/core/src/reducers/entries.ts
index 775896ae..5895bdc6 100644
--- a/packages/core/src/reducers/entries.ts
+++ b/packages/core/src/reducers/entries.ts
@@ -1,5 +1,4 @@
 import once from 'lodash/once';
-import set from 'lodash/set';
 import sortBy from 'lodash/sortBy';
 
 import {
@@ -24,6 +23,7 @@ import {
   SORT_ENTRIES_SUCCESS,
 } from '../constants';
 import { VIEW_STYLES, VIEW_STYLE_TABLE } from '../constants/views';
+import set from '../lib/util/set.util';
 
 import type { EntriesAction } from '../actions/entries';
 import type { SearchAction } from '../actions/search';
diff --git a/packages/core/src/reducers/entryDraft.ts b/packages/core/src/reducers/entryDraft.ts
index 8fa06eae..cc8a7fae 100644
--- a/packages/core/src/reducers/entryDraft.ts
+++ b/packages/core/src/reducers/entryDraft.ts
@@ -1,6 +1,5 @@
-import isEqual from 'lodash/isEqual';
-import set from 'lodash/set';
 import cloneDeep from 'lodash/cloneDeep';
+import isEqual from 'lodash/isEqual';
 import { v4 as uuid } from 'uuid';
 
 import {
@@ -25,6 +24,7 @@ import {
 import { duplicateI18nFields, getDataPath } from '../lib/i18n';
 import { fileForEntry } from '../lib/util/collection.util';
 import { applyDefaultsToDraftData } from '../lib/util/entry.util';
+import set from '../lib/util/set.util';
 
 import type { EntriesAction } from '../actions/entries';
 import type { Entry, FieldsErrors } from '../interface';
diff --git a/yarn.lock b/yarn.lock
index d1d971ae..eee8e97d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9648,6 +9648,11 @@ immer@^9.0.21, immer@^9.0.6:
   resolved "https://registry.yarnpkg.com/immer/-/immer-9.0.21.tgz#1e025ea31a40f24fb064f1fef23e931496330176"
   integrity sha512-bc4NBHqOqSfRW7POMkHd51LvClaeMXpm8dx0e8oE2GORbq5aRK7Bxl4FyzVLdGtLmvLKL7BTDBG5ACQm4HWjTA==
 
+immutable@4.3.4:
+  version "4.3.4"
+  resolved "https://registry.yarnpkg.com/immutable/-/immutable-4.3.4.tgz#2e07b33837b4bb7662f288c244d1ced1ef65a78f"
+  integrity sha512-fsXeu4J4i6WNWSikpI88v/PcVflZz+6kMhUfIwc5SY+poQRPnaf5V7qds6SUyUN3cVxEzuCab7QIoLOQ+DQ1wA==
+
 import-fresh@^3.0.0, import-fresh@^3.2.1:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/import-fresh/-/import-fresh-3.3.0.tgz#37162c25fcb9ebaa2e6e53d5b4d88ce17d9e0c2b"