diff --git a/klicker/components/ui/b-vega.vue b/klicker/components/ui/b-vega.vue
index 00bcad73..be514c1a 100644
--- a/klicker/components/ui/b-vega.vue
+++ b/klicker/components/ui/b-vega.vue
@@ -35,7 +35,6 @@ import { faDownload } from '@fortawesome/free-solid-svg-icons'
 import BShimmer from './b-shimmer.vue'
 import { defineComponent, onMounted, onUnmounted, PropType, ref, watch } from 'vue'
 import { useResizeObserver } from '@vueuse/core'
-import 'core-js/actual/structured-clone' // used by vega-lite but not widely supported yet -> polyfill it
 
 export default defineComponent({
   components: {
diff --git a/klicker/package.json b/klicker/package.json
index 4425cb6e..6691ad07 100644
--- a/klicker/package.json
+++ b/klicker/package.json
@@ -39,7 +39,6 @@
     "@tailwindcss/forms": "^0.5.7",
     "@tailwindcss/typography": "^0.5.10",
     "@vueuse/core": "^10.6.1",
-    "core-js": "^3.34.0",
     "d3-format": "^3.1.0",
     "date-fns": "^2.30.0",
     "html2canvas": "^1.4.1",
diff --git a/klicker/yarn.lock b/klicker/yarn.lock
index b7de4d84..45ae8507 100644
--- a/klicker/yarn.lock
+++ b/klicker/yarn.lock
@@ -4781,7 +4781,7 @@ core-js-compat@^3.31.0, core-js-compat@^3.33.1:
   dependencies:
     browserslist "^4.22.2"
 
-core-js@^3.34.0, core-js@^3.6.4, core-js@^3.6.5, core-js@^3.8.2:
+core-js@^3.6.4, core-js@^3.6.5, core-js@^3.8.2:
   version "3.34.0"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.34.0.tgz#5705e6ad5982678612e96987d05b27c6c7c274a5"
   integrity sha512-aDdvlDder8QmY91H88GzNi9EtQi2TjvQhpCX6B1v/dAZHU1AuLgHvRh54RiOerpEhEW46Tkf+vgAViB/CWC0ag==
diff --git a/web/package.json b/web/package.json
index 2129a702..1851d43d 100644
--- a/web/package.json
+++ b/web/package.json
@@ -27,6 +27,7 @@
     "@vitejs/plugin-vue": "^4.5.2",
     "compression": "^1.7.4",
     "cookie": "^0.6.0",
+    "core-js": "^3.34.0",
     "cross-env": "^7.0.3",
     "dotenv": "^16.3.1",
     "etag": "^1.8.1",
diff --git a/web/renderer/all.page.client.ts b/web/renderer/all.page.client.ts
index 28b0b007..b0fbd434 100644
--- a/web/renderer/all.page.client.ts
+++ b/web/renderer/all.page.client.ts
@@ -11,6 +11,10 @@ import {
   RewriteFrames as RewriteFramesIntegration,
 } from '@sentry/integrations'
 
+// polyfills
+import 'core-js/stable/structured-clone' // used by vega-lite
+import 'core-js/stable/object/from-entries'
+
 export { render }
 
 async function render(pageContext: PageContext) {
diff --git a/web/yarn.lock b/web/yarn.lock
index 5404c6a7..2c84764e 100644
--- a/web/yarn.lock
+++ b/web/yarn.lock
@@ -4774,7 +4774,7 @@ core-js-compat@^3.31.0, core-js-compat@^3.33.1:
   dependencies:
     browserslist "^4.22.2"
 
-core-js@^3.33.2, core-js@^3.6.5:
+core-js@^3.33.2, core-js@^3.34.0, core-js@^3.6.5:
   version "3.34.0"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.34.0.tgz#5705e6ad5982678612e96987d05b27c6c7c274a5"
   integrity sha512-aDdvlDder8QmY91H88GzNi9EtQi2TjvQhpCX6B1v/dAZHU1AuLgHvRh54RiOerpEhEW46Tkf+vgAViB/CWC0ag==
@@ -10946,16 +10946,16 @@ y18n@^5.0.5:
   resolved "https://registry.yarnpkg.com/y18n/-/y18n-5.0.8.tgz#7f4934d0f7ca8c56f95314939ddcd2dd91ce1d55"
   integrity sha512-0pfFzegeDWJHJIAmTLRP2DwHjdF5s7jo9tuztdQxAhINCdvS+3nGINqPd00AphqJR/0LhANUS6/+7SCb98YOfA==
 
-yallist@*, yallist@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz#9bb92790d9c0effec63be73519e11a35019a3a72"
-  integrity sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==
-
 yallist@^3.0.2:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.1.1.tgz#dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd"
   integrity sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==
 
+yallist@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz#9bb92790d9c0effec63be73519e11a35019a3a72"
+  integrity sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==
+
 yaml@^2.3.4:
   version "2.3.4"
   resolved "https://registry.yarnpkg.com/yaml/-/yaml-2.3.4.tgz#53fc1d514be80aabf386dc6001eb29bf3b7523b2"