diff --git a/packages/use-i18n/package.json b/packages/use-i18n/package.json
index c4eb7f2ec..50cad89d5 100644
--- a/packages/use-i18n/package.json
+++ b/packages/use-i18n/package.json
@@ -29,11 +29,11 @@
   "license": "MIT",
   "dependencies": {
     "@formatjs/ecma402-abstract": "1.14.3",
-    "@formatjs/fast-memoize": "1.2.7",
+    "@formatjs/fast-memoize": "1.2.8",
     "date-fns": "2.29.3",
     "filesize": "10.0.6",
     "international-types": "0.3.8",
-    "intl-messageformat": "10.2.5"
+    "intl-messageformat": "10.2.6"
   },
   "peerDependencies": {
     "date-fns": "2.x",
diff --git a/packages/use-i18n/src/formatters.ts b/packages/use-i18n/src/formatters.ts
index 46ca4fd8e..95ab2b217 100644
--- a/packages/use-i18n/src/formatters.ts
+++ b/packages/use-i18n/src/formatters.ts
@@ -38,17 +38,16 @@ type BaseFormatters = {
 }
 
 function createFastMemoizeCache<V>(): Cache<string, V> {
-  const store: Record<string, V> = {}
+  const store = new Map<string, V | undefined>()
 
   return {
-    // @ts-expect-error waiting for https://github.com/formatjs/formatjs/pull/3964
     create() {
       return {
         get(key) {
-          return store[key]
+          return store.get(key)
         },
         set(key, value) {
-          store[key] = value
+          return store.set(key, value)
         },
       }
     },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 4039f93cd..77c360c64 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -165,18 +165,18 @@ importers:
   packages/use-i18n:
     specifiers:
       '@formatjs/ecma402-abstract': 1.14.3
-      '@formatjs/fast-memoize': 1.2.7
+      '@formatjs/fast-memoize': 1.2.8
       date-fns: 2.29.3
       filesize: 10.0.6
       international-types: 0.3.8
-      intl-messageformat: 10.2.5
+      intl-messageformat: 10.2.6
     dependencies:
       '@formatjs/ecma402-abstract': 1.14.3
-      '@formatjs/fast-memoize': 1.2.7
+      '@formatjs/fast-memoize': 1.2.8
       date-fns: 2.29.3
       filesize: 10.0.6
       international-types: 0.3.8
-      intl-messageformat: 10.2.5
+      intl-messageformat: 10.2.6
 
   packages/use-media:
     specifiers: {}
@@ -1935,8 +1935,8 @@ packages:
       tslib: 2.4.1
     dev: false
 
-  /@formatjs/fast-memoize/1.2.7:
-    resolution: {integrity: sha512-hPeM5LXUUjtCKPybWOUAWpv8lpja8Xz+uKprFPJcg5F2Rd+/bf1E0UUsLRpaAgOReAf5HMRtoIgv/UcyPICrTQ==}
+  /@formatjs/fast-memoize/1.2.8:
+    resolution: {integrity: sha512-PemNUObyoIZcqdQ1ixTPugzAzhEj7j6AHIyrq/qR6x5BFTvOQeXHYsVZUqBEFduAIscUaDfou+U+xTqOiunJ3Q==}
     dependencies:
       tslib: 2.4.1
     dev: false
@@ -7753,11 +7753,11 @@ packages:
     resolution: {integrity: sha512-DeAFYOSA2wuUiSkFnAqrIM1UNVSAa8aP6hbXQOK4n74VuP/bCZPlZ7SEnCZ6+JBID/ekH1Ir5xTwsKA2Q++mKw==}
     dev: false
 
-  /intl-messageformat/10.2.5:
-    resolution: {integrity: sha512-AievYMN6WLLHwBeCTv4aRKG+w3ZNyZtkObwgsKk3Q7GNTq8zDRvDbJSBQkb2OPeVCcAKcIXvak9FF/bRNavoww==}
+  /intl-messageformat/10.2.6:
+    resolution: {integrity: sha512-qaTfGjXhdgDup5h3O8406GlQjEj0ky3q0cWWu/lL+H6vJA+sY2/8e4l4XrRPbi9vp38Pop0gO5dsrMO0DdEEBw==}
     dependencies:
       '@formatjs/ecma402-abstract': 1.14.3
-      '@formatjs/fast-memoize': 1.2.7
+      '@formatjs/fast-memoize': 1.2.8
       '@formatjs/icu-messageformat-parser': 2.1.14
       tslib: 2.4.1
     dev: false