diff --git a/package.json b/package.json
index cbca702a4d..a506141802 100644
--- a/package.json
+++ b/package.json
@@ -87,7 +87,7 @@
     "@formatjs/intl-listformat": "^7.7.13",
     "@formatjs/intl-locale": "^4.2.13",
     "@formatjs/intl-numberformat": "^9.1.2",
-    "@formatjs/intl-pluralrules": "^5.4.6",
+    "@formatjs/intl-pluralrules": "^6.1.2",
     "@formatjs/intl-relativetimeformat": "^11.4.13",
     "@reduxjs/toolkit": "^2.11.2",
     "@sentry/integrations": "^7.114.0",
diff --git a/pkg/webui/lib/components/with-locale.js b/pkg/webui/lib/components/with-locale.js
index 1d339c7778..fe1dfdf0c3 100644
--- a/pkg/webui/lib/components/with-locale.js
+++ b/pkg/webui/lib/components/with-locale.js
@@ -136,7 +136,9 @@ const WithLocale = ({ children }) => {
         if (!window.Intl.PluralRules) {
           log('Polyfilling Intl.PluralRules')
           await import(
-            /* webpackChunkName: "locale-plural-rules" */ '@formatjs/intl-pluralrules/polyfill'
+            /* webpackChunkName: "locale-plural-rules" */
+            // eslint-disable-next-line import/extensions -- package exports require explicit .js
+            '@formatjs/intl-pluralrules/polyfill.js'
           )
         }
 
diff --git a/yarn.lock b/yarn.lock
index cf10346fb9..990c8bd217 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1770,6 +1770,16 @@
     decimal.js "^10.4.3"
     tslib "^2.8.0"
 
+"@formatjs/ecma402-abstract@3.0.8":
+  version "3.0.8"
+  resolved "https://registry.yarnpkg.com/@formatjs/ecma402-abstract/-/ecma402-abstract-3.0.8.tgz#b9c0bb8642c785408523d1c73fb44ff5942a4d7c"
+  integrity sha512-NRiqvxAvhbARZRFSRFPjN0y8txxmVutv2vMYvW2HSdCVf58w9l4osLj6Ujif643vImwZBcbKqhiKE0IOhY+DvA==
+  dependencies:
+    "@formatjs/fast-memoize" "3.0.3"
+    "@formatjs/intl-localematcher" "0.7.5"
+    decimal.js "^10.4.3"
+    tslib "^2.8.0"
+
 "@formatjs/fast-memoize@2.2.7":
   version "2.2.7"
   resolved "https://registry.yarnpkg.com/@formatjs/fast-memoize/-/fast-memoize-2.2.7.tgz#707f9ddaeb522a32f6715bb7950b0831f4cc7b15"
@@ -1784,6 +1794,13 @@
   dependencies:
     tslib "^2.8.0"
 
+"@formatjs/fast-memoize@3.0.3":
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/@formatjs/fast-memoize/-/fast-memoize-3.0.3.tgz#5ce5bcd8c2f3e251717373c5485326b24984fc37"
+  integrity sha512-CArYtQKGLAOruCMeq5/RxCg6vUXFx3OuKBdTm30Wn/+gCefehmZ8Y2xSMxMrO2iel7hRyE3HKfV56t3vAU6D4Q==
+  dependencies:
+    tslib "^2.8.0"
+
 "@formatjs/icu-messageformat-parser@2.11.4":
   version "2.11.4"
   resolved "https://registry.yarnpkg.com/@formatjs/icu-messageformat-parser/-/icu-messageformat-parser-2.11.4.tgz#63bd2cd82d08ae2bef55adeeb86486df68826f32"
@@ -1869,6 +1886,14 @@
     "@formatjs/fast-memoize" "3.0.3"
     tslib "^2.8.0"
 
+"@formatjs/intl-localematcher@0.7.5":
+  version "0.7.5"
+  resolved "https://registry.yarnpkg.com/@formatjs/intl-localematcher/-/intl-localematcher-0.7.5.tgz#02100df1746be931ce18376e00250d82c6d9866d"
+  integrity sha512-7/nd90cn5CT7SVF71/ybUKAcnvBlr9nZlJJp8O8xIZHXFgYOC4SXExZlSdgHv2l6utjw1byidL06QzChvQMHwA==
+  dependencies:
+    "@formatjs/fast-memoize" "3.0.3"
+    tslib "^2.8.0"
+
 "@formatjs/intl-numberformat@^9.1.2":
   version "9.1.2"
   resolved "https://registry.yarnpkg.com/@formatjs/intl-numberformat/-/intl-numberformat-9.1.2.tgz#44689aadd206a074c22cc99119af39a5b7a35ac1"
@@ -1879,13 +1904,13 @@
     decimal.js "^10.4.3"
     tslib "^2.8.0"
 
-"@formatjs/intl-pluralrules@^5.4.6":
-  version "5.4.6"
-  resolved "https://registry.yarnpkg.com/@formatjs/intl-pluralrules/-/intl-pluralrules-5.4.6.tgz#4bd73c4e87974265a7962b6caf0d146e3310f3ad"
-  integrity sha512-2HlOq+c7KsSps829SJ3B5987coX5mzKx9NbPcNwQ07eq8FBHgB3HfMoxt5HvLsdk4oQwCjAEnocbtd+wVwZ2Kg==
+"@formatjs/intl-pluralrules@^6.1.2":
+  version "6.1.2"
+  resolved "https://registry.yarnpkg.com/@formatjs/intl-pluralrules/-/intl-pluralrules-6.1.2.tgz#d2528eac683ac3bb1ae16c370b108b59f6e17f7f"
+  integrity sha512-ZBLPaRnQrnekB18acuOwitgqsLuaRmuA0BDjUga5ni6uYjlWlYm71eI8Uy2VJ7M4hoVDQWt6KaPdfVhAjZhBEg==
   dependencies:
-    "@formatjs/ecma402-abstract" "2.3.6"
-    "@formatjs/intl-localematcher" "0.6.2"
+    "@formatjs/ecma402-abstract" "3.0.8"
+    "@formatjs/intl-localematcher" "0.7.5"
     decimal.js "^10.4.3"
     tslib "^2.8.0"