diff --git a/CHANGELOG.md b/CHANGELOG.md
index fcc6e2c..336f873 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Fixed
+
+- The canonical `@deepseek-ai/dsh-*` peer range now admits the `0.1.6-alpha.2` tuple (`|| >=0.1.6-0 <0.2.0`). The `peer-range` tripwire has been failing on `master` since that tuple was published, because semver's prerelease rule gives every new tuple its own clause; the three peers this package declares are re-pinned in the same commit, the lockfile's specifiers follow, and the `sync-peer-range` fixture's "higher-floor" example was raised above the new floor.
 ## [0.1.9] - 2026-09-12
 
 ### Added
diff --git a/data/peer-range.json b/data/peer-range.json
index ffd4ea9..c3923c0 100644
--- a/data/peer-range.json
+++ b/data/peer-range.json
@@ -1,5 +1,5 @@
 {
-  "canonicalRange": ">=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0",
-  "updatedAt": "2026-09-10",
+  "canonicalRange": ">=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0 || >=0.1.6-0 <0.2.0",
+  "updatedAt": "2026-09-19",
   "note": "Canonical peerDependencies range for @deepseek-ai/dsh-* across the ecosystem. The OR form is required by semver's prerelease rule: a prerelease version only satisfies a comparator set when a comparator in the same [major, minor, patch] tuple carries a prerelease, so 0.1.5-rc.1 is NOT admitted by the bare '>=0.1.2-rc.1 <0.2.0'. Every new upstream prerelease tuple needs its own clause - run `node scripts/check-peer-range-latest.mjs` to detect a missing one (it reads the published dist-tags and prints the clause to append). Run `node scripts/sync-peer-range.mjs --dir <reposDir> --write` after updating this file to re-pin every repo, then let the shared Renovate preset open the update PRs."
 }
diff --git a/package.json b/package.json
index d328b59..4a843cb 100644
--- a/package.json
+++ b/package.json
@@ -84,9 +84,9 @@
   "packageManager": "pnpm@11.7.0",
   "peerDependencies": {
     "@deepseek-ai/cordis": "^4.0.2",
-    "@deepseek-ai/dsh-session": ">=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0",
-    "@deepseek-ai/dsh-tools": ">=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0",
-    "@deepseek-ai/dsh-user-approval": ">=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0",
+    "@deepseek-ai/dsh-session": ">=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0 || >=0.1.6-0 <0.2.0",
+    "@deepseek-ai/dsh-tools": ">=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0 || >=0.1.6-0 <0.2.0",
+    "@deepseek-ai/dsh-user-approval": ">=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0 || >=0.1.6-0 <0.2.0",
     "@deepseek-ai/schemastery": "^3.18.2"
   },
   "peerDependenciesMeta": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index a400770..0b93899 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -12,13 +12,13 @@ importers:
         specifier: ^4.0.2
         version: 4.0.2
       '@deepseek-ai/dsh-session':
-        specifier: '>=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0'
+        specifier: '>=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0 || >=0.1.6-0 <0.2.0'
         version: 0.1.2-rc.1(@deepseek-ai/cordis@4.0.2)(@deepseek-ai/dsh-scope@0.1.0-rc.8(@deepseek-ai/cordis@4.0.2)(@deepseek-ai/dsh-invariants@0.1.0-rc.8(@deepseek-ai/cordis@4.0.2)))
       '@deepseek-ai/dsh-tools':
-        specifier: '>=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0'
+        specifier: '>=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0 || >=0.1.6-0 <0.2.0'
         version: 0.1.2-rc.1(45afca29d657cd93350ff31b45a89bd7)
       '@deepseek-ai/dsh-user-approval':
-        specifier: '>=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0'
+        specifier: '>=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0 || >=0.1.6-0 <0.2.0'
         version: 0.1.2-rc.1(9dc9fb75cbaa540955081fa631e1628d)
       '@deepseek-ai/schemastery':
         specifier: ^3.18.2
diff --git a/scripts/sync-peer-range.mjs b/scripts/sync-peer-range.mjs
index 7af82ef..208557c 100644
--- a/scripts/sync-peer-range.mjs
+++ b/scripts/sync-peer-range.mjs
@@ -61,7 +61,7 @@ const CLAUSE_RE = /^>=(\S+)\s+<(\S+)$/
  *
  * Both shapes occur in this ecosystem:
  * - single clause: `>=0.1.2-rc.1 <0.2.0`
- * - OR form:       `>=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0`
+ * - OR form:       `>=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0 || >=0.1.6-0 <0.2.0`
  *
  * The OR form exists because of semver's prerelease rule: a prerelease version
  * only satisfies a comparator set when a comparator in the *same*
diff --git a/test/sync-peer-range.test.mjs b/test/sync-peer-range.test.mjs
index 426c128..fd176a7 100644
--- a/test/sync-peer-range.test.mjs
+++ b/test/sync-peer-range.test.mjs
@@ -144,7 +144,8 @@ describe('CLI end-to-end', () => {
       await readFile(resolve(import.meta.dirname, '..', 'data', 'peer-range.json'), 'utf8'),
     ).canonicalRange
     // above every canonical floor: a real per-package requirement, left alone
-    const highFloor = '>=0.1.5-rc.1 <0.2.0'
+    // (raised together with canonicalRange's newest tuple, 2026-09-19)
+    const highFloor = '>=0.1.6-rc.1 <0.2.0'
     const repoDir = join(dir, 'cli-repo')
     await mkdir(repoDir, { recursive: true })
     const pkg = join(repoDir, 'package.json')