diff --git a/.changeset/sweet-lemons-brake.md b/.changeset/sweet-lemons-brake.md
new file mode 100644
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+++ b/.changeset/sweet-lemons-brake.md
@@ -0,0 +1,10 @@
+---
+'@lit-labs/ssr-client': minor
+'lit-element': patch
+'lit-html': patch
+'lit': patch
+---
+
+`lit-html/experimental-hydrate.js` and `lit-element/experimental-hydrate-support.js` have been moved to `@lit-labs/ssr-client`.
+
+The modules in the original location have been marked deprecated and will be removed in a future version.