diff --git a/NOTICE.md b/NOTICE.md
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--- a/NOTICE.md
+++ b/NOTICE.md
@@ -1,7 +1,19 @@
 # Notice
 
 Impeccable
-Copyright 2025 Paul Bakaus
+Copyright 2025-2026 Paul Bakaus
+
+## Detection Engine
+
+The anti-pattern detection engine (`@impeccable/detect`) is a separate package
+licensed under the Business Source License 1.1 (BSL-1.1), not Apache 2.0.
+
+- Package: https://www.npmjs.com/package/@impeccable/detect
+- Source: https://github.com/pbakaus/impeccable-detect
+- License: BSL-1.1 (free for individuals, open source projects, and organizations
+  with 5 or fewer people or under $1M ARR; commercial license required otherwise)
+
+Installing this package pulls in `@impeccable/detect` as a dependency.
 
 ## Anthropic frontend-design Skill