diff --git a/.changeset/new-hats-design.md b/.changeset/new-hats-design.md
index b46a564e1..7cf73aec1 100644
--- a/.changeset/new-hats-design.md
+++ b/.changeset/new-hats-design.md
@@ -14,4 +14,4 @@
 '@astrojs/renderer-lit': minor
 ---
 
-Support for Node v14.15+, dropping Node v12.
+Officially drop support for Node v12. The minimum supported version is now Node v14.15+,
diff --git a/.changeset/sweet-pots-add.md b/.changeset/sweet-pots-add.md
new file mode 100644
index 000000000..a902acf23
--- /dev/null
+++ b/.changeset/sweet-pots-add.md
@@ -0,0 +1,5 @@
+---
+'astro': minor
+---
+
+Replace `fetch` detection via Vite plugin with a more resilient `globalThis` polyfill