diff --git a/.changeset/honest-rivers-call.md b/.changeset/honest-rivers-call.md
new file mode 100644
index 0000000000..ca88f46057
--- /dev/null
+++ b/.changeset/honest-rivers-call.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Revert 939b9d0 "Allow dev server port to be set by PORT environment variable"