diff --git a/package-lock.json b/package-lock.json
index 0a7789a..0135e2f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,16 +16,17 @@
         "@deepseek-ai/dsh-llm": "0.1.5-rc.3",
         "@deepseek-ai/dsh-skill": "0.1.5-rc.3",
         "@deepseek-ai/dsh-tools": "0.1.5-rc.3",
-        "@deepseek-ai/schemastery": "3.18.2"
+        "@deepseek-ai/schemastery": "3.18.2",
+        "semver": "7.6.3"
       },
       "engines": {
         "node": ">=22.13.0"
       },
       "peerDependencies": {
-        "@deepseek-ai/cordis": "^4.0.1-rc.1",
-        "@deepseek-ai/dsh-llm": ">=0.1.5-0",
-        "@deepseek-ai/dsh-skill": ">=0.1.5-0",
-        "@deepseek-ai/dsh-tools": ">=0.1.5-0",
+        "@deepseek-ai/cordis": "^4.0.1-rc.1 || ^4.0.5-0",
+        "@deepseek-ai/dsh-llm": ">=0.1.5-0 || >=0.2.0-0 || >=0.2.1-0",
+        "@deepseek-ai/dsh-skill": ">=0.1.5-0 || >=0.2.0-0 || >=0.2.1-0",
+        "@deepseek-ai/dsh-tools": ">=0.1.5-0 || >=0.2.0-0 || >=0.2.1-0",
         "@deepseek-ai/schemastery": "^3.18.2"
       },
       "peerDependenciesMeta": {
@@ -735,6 +736,19 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/semver": {
+      "version": "7.6.3",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.6.3.tgz",
+      "integrity": "sha512-oVekP1cKtI+CTDvHWYFUcMtsK/00wmAEfyqKfNdARm8u1wNVhSgaX7A8d4UuIlUI5e84iEwOhs7ZPYRmzU9U6A==",
+      "dev": true,
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/ulid": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/ulid/-/ulid-2.4.0.tgz",
diff --git a/package.json b/package.json
index 5ea1c1d..769b572 100644
--- a/package.json
+++ b/package.json
@@ -43,10 +43,10 @@
     "sync-profile": "bash scripts/sync-dsh-profile.sh"
   },
   "peerDependencies": {
-    "@deepseek-ai/cordis": "^4.0.1-rc.1",
-    "@deepseek-ai/dsh-llm": ">=0.1.5-0",
-    "@deepseek-ai/dsh-skill": ">=0.1.5-0",
-    "@deepseek-ai/dsh-tools": ">=0.1.5-0",
+    "@deepseek-ai/cordis": "^4.0.1-rc.1 || ^4.0.5-0",
+    "@deepseek-ai/dsh-llm": ">=0.1.5-0 || >=0.2.0-0 || >=0.2.1-0",
+    "@deepseek-ai/dsh-skill": ">=0.1.5-0 || >=0.2.0-0 || >=0.2.1-0",
+    "@deepseek-ai/dsh-tools": ">=0.1.5-0 || >=0.2.0-0 || >=0.2.1-0",
     "@deepseek-ai/schemastery": "^3.18.2"
   },
   "peerDependenciesMeta": {
@@ -71,7 +71,8 @@
     "@deepseek-ai/dsh-llm": "0.1.5-rc.3",
     "@deepseek-ai/dsh-skill": "0.1.5-rc.3",
     "@deepseek-ai/dsh-tools": "0.1.5-rc.3",
-    "@deepseek-ai/schemastery": "3.18.2"
+    "@deepseek-ai/schemastery": "3.18.2",
+    "semver": "7.6.3"
   },
   "dsh": {
     "bundle": {
diff --git a/test/peer-ranges.test.js b/test/peer-ranges.test.js
new file mode 100644
index 0000000..e6986a4
--- /dev/null
+++ b/test/peer-ranges.test.js
@@ -0,0 +1,30 @@
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { test } from 'node:test';
+
+import semver from 'semver';
+
+const { peerDependencies } = JSON.parse(readFileSync(new URL('../package.json', import.meta.url), 'utf8'));
+const DSH_PACKAGES = ['@deepseek-ai/dsh-llm', '@deepseek-ai/dsh-skill', '@deepseek-ai/dsh-tools'];
+
+// npm and pnpm check peers without includePrerelease, so a prerelease only
+// matches a comparator on its own major.minor.patch: every dsh line needs a branch.
+const accepts = (version, range) => semver.satisfies(version, range);
+
+test('dsh peers accept every dsh line the plugin runs on, prereleases included', () => {
+  for (const version of ['0.1.5-rc.3', '0.1.5', '0.2.0-rc.2', '0.2.0', '0.2.1-alpha.5', '0.2.1-rc.2', '0.2.1']) {
+    for (const name of DSH_PACKAGES) assert.equal(accepts(version, peerDependencies[name]), true, `${name}@${version}`);
+  }
+});
+
+test('dsh peers still refuse lines older than 0.1.5', () => {
+  for (const version of ['0.1.1-rc.2', '0.1.4']) {
+    for (const name of DSH_PACKAGES) assert.equal(accepts(version, peerDependencies[name]), false, `${name}@${version}`);
+  }
+});
+
+test('the cordis peer accepts the cordis each dsh line pins', () => {
+  for (const version of ['4.0.1-rc.4', '4.0.4', '4.0.5-alpha.2', '4.0.5']) {
+    assert.equal(accepts(version, peerDependencies['@deepseek-ai/cordis']), true, version);
+  }
+});