diff --git a/CHANGELOG.md b/CHANGELOG.md
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+++ b/CHANGELOG.md
@@ -2,8 +2,9 @@
 
 Full release notes with details on each version: [GitHub Releases](https://github.com/safishamsi/graphify/releases)
 
-## 0.9.17 (unreleased)
+## 0.9.17 (2026-07-16)
 
+- Acknowledgement: Amp (ampcode.com) platform support, which shipped earlier in v8, was contributed by @zuwasi in #948 (the `skill-amp.md` skill and the `graphify amp install` wiring). Belated credit for the work.
 - Fix: a missing `manifest.json` no longer degrades `graphify extract --code-only` into a full scan that discards the committed semantic layer (#1925). On a fresh clone (or when the manifest is deliberately untracked because its mtimes churn), the incremental gate required both `manifest.json` and `graph.json`; with only the graph present it fell to a full scan, and under `--code-only` that dropped every doc/paper/image node — silently replacing a curated graph with an AST-only skeleton. An existing `graph.json` is now a sufficient incremental baseline: `detect_incremental` already treats an absent manifest as "everything new / nothing deleted", so `build_merge` + `_stale_graph_sources` preserve files that are merely out of this run's scope while still evicting genuinely deleted sources.
 - Fix: hyperedge-only documents are now stamped in the manifest instead of being re-extracted on every run (#1920). `_stamped_manifest_files` (#1897) decided a semantic doc "produced output" by inspecting only `nodes` and `edges`, never `hyperedges`, so a chunk whose only output for a doc was a hyperedge (3+ nodes sharing a concept) left that doc unstamped and perpetually re-queued. Stamping now counts hyperedge output too, mirroring the per-`source_file` keying the semantic cache already uses.
 - Fix: the PHP extractor now disambiguates same-named classes across namespaces (#1923). A bare class reference (`extends Page`) collapsed onto the only internal class named `Page`, so `App\Models\Page` and an imported `Filament\Pages\Page` fused into one node, manufacturing a false `inherits`/`imports` edge and a bogus cross-community bridge. A new namespace/`use`-aware resolution pass (mirroring the Java resolver, running before the unique-name rewire) re-points supertype/import references to the real definition, or parks provably-external ones on a fully-qualified stub the bare-name rewire cannot collapse. Plain, non-namespaced PHP is unchanged.