diff --git a/src/services/extensions/v2/README.md b/src/services/extensions/v2/README.md
index 75895ff4..45689a74 100644
--- a/src/services/extensions/v2/README.md
+++ b/src/services/extensions/v2/README.md
@@ -21,11 +21,15 @@ New v2 writes use the [FOSSBilling manifest v1 fields](https://github.com/FOSSBi
 
 API publishing fields `readme`, `source`, `download_url`, and `releases` remain alongside the manifest metadata. Each release carries its own `requires` object instead of `min_fossbilling_version`. Constraints are retained verbatim, including Composer ranges and module dependencies; package CI remains responsible for semantic constraint/license validation and confirming that icon files exist. The API adds size bounds to metadata (author names: 200 characters; license and requirement strings: 1,000; URLs and icon paths: 2,048).
 
+`requires.fossbilling` is mandatory. `requires.php` is an optional additional restriction: when omitted, FOSSBilling’s PHP requirements apply; when supplied, both the core and extension constraints must be satisfied.
+
 `author` is package attribution. `developer` identifies the authenticated owner and remains controlled by the API; an author field never grants ownership.
 
-Run the read-only `db/manifest-preflight.sql` query before deployment. It reports extension IDs and zero-based release indexes needing manual correction. Every published release must have an explicitly reviewed `requires` object, including its PHP constraint; migration does not invent `*`, an author, or a license placeholder. Use the package manifest/release metadata to fill missing requirements. A deliberate `*` is allowed only when it accurately represents the reviewed requirement.
+Run the read-only `db/manifest-preflight.sql` query before deployment. It reports extension IDs and zero-based release indexes needing manual correction.
+
+Migration `0029` fills a missing `requires.fossbilling` from the legacy minimum as a `>=` constraint, preserving existing PHP and module constraints. It also adds verified PHP constraints from the BTCPay 0.1.3–0.1.5 and OpenReceive 0.4.29 packages. Explicitly invalid values require correction using verified package metadata.
 
-Migration `0029_align_manifest.sql` stops with `manifest_data_requires_manual_correction` if the preflight reports issues, rolling back the entire migration. Correct those rows and retry. Once prepared, it converts `mod` to `module`, converts legacy license objects to strings (using `spdx_id`, otherwise `name`), copies the current release's exact requirements and the developer's attribution, and removes obsolete release minimum fields. Physical `website` storage remains for v1 compatibility. Reviewed and pending revision bodies retain their original audit content; old pending revisions must be resubmitted using the new contract before approval. Published reads expect canonical storage; historical audit reads remain separate.
+Migration `0029_align_manifest.sql` stops with `manifest_data_requires_manual_correction` if the preflight reports issues, rolling back the entire migration. Correct those rows and retry. Once prepared, it converts `mod` to `module`, converts legacy license objects to strings (using `spdx_id`, otherwise `name`), copies the current release's requirements and the developer's attribution, and removes obsolete release minimum fields. Physical `website` storage remains for v1 compatibility. Reviewed and pending revision bodies retain their original audit content; old pending revisions must be resubmitted using the new contract before approval. Published reads expect canonical storage; historical audit reads remain separate.
 
 For example, after checking an affected package's actual requirements, an operator can add `requires` to one release without rewriting its remaining fields:
 
diff --git a/src/services/extensions/v2/db/manifest-preflight.sql b/src/services/extensions/v2/db/manifest-preflight.sql
index b4811e20..b84cf9dd 100644
--- a/src/services/extensions/v2/db/manifest-preflight.sql
+++ b/src/services/extensions/v2/db/manifest-preflight.sql
@@ -13,7 +13,13 @@ WITH published AS (
   WHERE e.published_at IS NOT NULL
 ), release_rows AS (
   SELECT p.id, r.key AS release_index, r.type AS release_type,
-    CASE WHEN r.type = 'object' THEN r.value ELSE '{}' END AS release
+    CASE WHEN r.type = 'object' THEN CASE
+      WHEN (json_type(r.value,'$.requires') IS NULL
+        OR (json_type(r.value,'$.requires') = 'object' AND json_type(r.value,'$.requires.fossbilling') IS NULL))
+        AND json_type(r.value,'$.min_fossbilling_version') = 'text'
+        AND length(trim(json_extract(r.value,'$.min_fossbilling_version'))) BETWEEN 1 AND 100
+      THEN json_set(r.value,'$.requires.fossbilling','>=' || trim(json_extract(r.value,'$.min_fossbilling_version')))
+      ELSE r.value END ELSE '{}' END AS release
   FROM published p, json_each(CASE WHEN json_valid(p.releases) THEN p.releases ELSE '[]' END) r
 )
 SELECT p.id, NULL AS release_index, problem.value AS issue
@@ -34,13 +40,13 @@ FROM published p, json_each(json_array(
     THEN 'version: identify exactly one current release matching version or v+version' END
 )) problem WHERE problem.value IS NOT NULL
 UNION ALL
-SELECT id, release_index, 'requires: set explicit FOSSBilling and PHP constraints for this release; missing values are not guessed'
+SELECT id, release_index, 'requires: supply a FOSSBilling constraint or legacy minimum and a valid optional PHP constraint'
 FROM release_rows WHERE release_type != 'object'
   OR COALESCE(json_type(release,'$.requires'),'') != 'object'
   OR COALESCE(json_type(release,'$.requires.fossbilling'),'') != 'text'
-  OR COALESCE(json_type(release,'$.requires.php'),'') != 'text'
   OR COALESCE(length(trim(json_extract(release,'$.requires.fossbilling'))),0) NOT BETWEEN 1 AND 1000
-  OR COALESCE(length(trim(json_extract(release,'$.requires.php'))),0) NOT BETWEEN 1 AND 1000
+  OR (json_type(release,'$.requires.php') IS NOT NULL AND (json_type(release,'$.requires.php') != 'text'
+    OR length(trim(json_extract(release,'$.requires.php'))) NOT BETWEEN 1 AND 1000))
   OR EXISTS (SELECT 1 FROM json_each(CASE WHEN json_type(release,'$.requires') = 'object' THEN json_extract(release,'$.requires') ELSE '{}' END)
     WHERE key NOT IN ('fossbilling','php','modules'))
   OR (json_type(release,'$.requires.modules') IS NOT NULL AND json_type(release,'$.requires.modules') != 'object')
diff --git a/src/services/extensions/v2/db/migrations/0029_align_manifest.sql b/src/services/extensions/v2/db/migrations/0029_align_manifest.sql
index f61266d5..63653e32 100644
--- a/src/services/extensions/v2/db/migrations/0029_align_manifest.sql
+++ b/src/services/extensions/v2/db/migrations/0029_align_manifest.sql
@@ -167,7 +167,13 @@ WITH published AS (
   WHERE e.published_at IS NOT NULL
 ), release_rows AS (
   SELECT p.id, r.key AS release_index, r.type AS release_type,
-    CASE WHEN r.type = 'object' THEN r.value ELSE '{}' END AS release
+    CASE WHEN r.type = 'object' THEN CASE
+      WHEN (json_type(r.value,'$.requires') IS NULL
+        OR (json_type(r.value,'$.requires') = 'object' AND json_type(r.value,'$.requires.fossbilling') IS NULL))
+        AND json_type(r.value,'$.min_fossbilling_version') = 'text'
+        AND length(trim(json_extract(r.value,'$.min_fossbilling_version'))) BETWEEN 1 AND 100
+      THEN json_set(r.value,'$.requires.fossbilling','>=' || trim(json_extract(r.value,'$.min_fossbilling_version')))
+      ELSE r.value END ELSE '{}' END AS release
   FROM published p, json_each(CASE WHEN json_valid(p.releases) THEN p.releases ELSE '[]' END) r
 )
 SELECT p.id, NULL AS release_index, problem.value AS issue
@@ -188,13 +194,13 @@ FROM published p, json_each(json_array(
     THEN 'version: identify exactly one current release matching version or v+version' END
 )) problem WHERE problem.value IS NOT NULL
 UNION ALL
-SELECT id, release_index, 'requires: set explicit FOSSBilling and PHP constraints for this release; missing values are not guessed'
+SELECT id, release_index, 'requires: supply a FOSSBilling constraint or legacy minimum and a valid optional PHP constraint'
 FROM release_rows WHERE release_type != 'object'
   OR COALESCE(json_type(release,'$.requires'),'') != 'object'
   OR COALESCE(json_type(release,'$.requires.fossbilling'),'') != 'text'
-  OR COALESCE(json_type(release,'$.requires.php'),'') != 'text'
   OR COALESCE(length(trim(json_extract(release,'$.requires.fossbilling'))),0) NOT BETWEEN 1 AND 1000
-  OR COALESCE(length(trim(json_extract(release,'$.requires.php'))),0) NOT BETWEEN 1 AND 1000
+  OR (json_type(release,'$.requires.php') IS NOT NULL AND (json_type(release,'$.requires.php') != 'text'
+    OR length(trim(json_extract(release,'$.requires.php'))) NOT BETWEEN 1 AND 1000))
   OR EXISTS (SELECT 1 FROM json_each(CASE WHEN json_type(release,'$.requires') = 'object' THEN json_extract(release,'$.requires') ELSE '{}' END)
     WHERE key NOT IN ('fossbilling','php','modules'))
   OR (json_type(release,'$.requires.modules') IS NOT NULL AND json_type(release,'$.requires.modules') != 'object')
@@ -212,6 +218,38 @@ DROP TABLE _manifest_migration_check;
 --> statement-breakpoint
 DROP VIEW _manifest_migration_issues;
 --> statement-breakpoint
+-- Preserve legacy minimums as lower-bound constraints. No extra PHP constraint
+-- means the extension inherits the PHP requirements of its FOSSBilling runtime.
+UPDATE extensions SET releases = (
+  SELECT json_group_array(json(CASE
+    WHEN r.type = 'object' AND (json_type(r.value,'$.requires') IS NULL
+        OR (json_type(r.value,'$.requires') = 'object' AND json_type(r.value,'$.requires.fossbilling') IS NULL))
+      AND json_type(r.value,'$.min_fossbilling_version') = 'text'
+      AND length(trim(json_extract(r.value,'$.min_fossbilling_version'))) BETWEEN 1 AND 100
+    THEN json_set(r.value,'$.requires.fossbilling','>=' || trim(json_extract(r.value,'$.min_fossbilling_version')))
+    ELSE r.value END))
+  FROM json_each(CASE WHEN json_valid(extensions.releases) THEN extensions.releases ELSE '[]' END) r
+) WHERE published_at IS NOT NULL AND json_valid(releases) AND json_type(releases) = 'array';
+--> statement-breakpoint
+-- Composer requirements from the distributed release packages:
+-- https://github.com/ChristianGabs/btcpay-fossbilling/releases (0.1.3-0.1.5)
+-- https://github.com/OpenReceive/openreceive/releases/tag/v0.4.29
+UPDATE extensions SET releases = (
+  SELECT json_group_array(json(CASE
+    WHEN json_extract(value,'$.tag') IN ('0.1.3','v0.1.3','0.1.4','v0.1.4','0.1.5','v0.1.5')
+      AND json_type(value,'$.requires.php') IS NULL
+    THEN json_set(value,'$.requires.php','>=8.1') ELSE value END))
+  FROM json_each(extensions.releases)
+) WHERE id = 'BTCPay' AND published_at IS NOT NULL;
+--> statement-breakpoint
+UPDATE extensions SET releases = (
+  SELECT json_group_array(json(CASE
+    WHEN json_extract(value,'$.tag') IN ('0.4.29','v0.4.29')
+      AND json_type(value,'$.requires.php') IS NULL
+    THEN json_set(value,'$.requires.php','^8.2') ELSE value END))
+  FROM json_each(extensions.releases)
+) WHERE id = 'openreceive' AND published_at IS NOT NULL;
+--> statement-breakpoint
 UPDATE extensions SET
   type = CASE WHEN type = 'mod' THEN 'module' ELSE type END,
   license = json_quote(CASE WHEN json_type(license) = 'object'
@@ -225,7 +263,8 @@ UPDATE extensions SET
   )
 WHERE published_at IS NOT NULL;
 --> statement-breakpoint
--- Requirements have been explicitly reviewed. Remove only the obsolete v1 field.
+-- Requirements retain the legacy minimum or an explicit constraint.
+-- Remove only the obsolete v1 field.
 UPDATE extensions SET releases = (
   SELECT json_group_array(json(json_remove(value,'$.min_fossbilling_version')))
   FROM json_each(extensions.releases)
diff --git a/src/services/extensions/v2/schemas/manifest.ts b/src/services/extensions/v2/schemas/manifest.ts
index 7605348b..ebee1f46 100644
--- a/src/services/extensions/v2/schemas/manifest.ts
+++ b/src/services/extensions/v2/schemas/manifest.ts
@@ -21,7 +21,11 @@ const versionConstraint = z
 export const ManifestRequirementsSchema = z
   .object({
     fossbilling: versionConstraint,
-    php: versionConstraint,
+    php: versionConstraint
+      .optional()
+      .describe(
+        "Additional PHP constraint; when omitted, FOSSBilling runtime requirements apply"
+      ),
     modules: z
       .record(z.string().regex(/^[a-z0-9_-]+$/), versionConstraint)
       .optional()
diff --git a/test/services/extensions/v2/manifest.test.ts b/test/services/extensions/v2/manifest.test.ts
index 26e5cc21..cfc35fa8 100644
--- a/test/services/extensions/v2/manifest.test.ts
+++ b/test/services/extensions/v2/manifest.test.ts
@@ -105,6 +105,42 @@ describe("manifest v1 publishing", () => {
     });
   });
 
+  it("publishes without an additional PHP restriction", async () => {
+    await seedDeveloper("owner", "user-1");
+    await insertUser(db, { id: "moderator", is_moderator: 1 });
+    const fixture = sampleCreate();
+    const requires = { fossbilling: "^0.8.9" };
+    const content = {
+      ...fixture,
+      requires,
+      releases: fixture.releases.map((release) => ({ ...release, requires }))
+    };
+    const created = await post(
+      "/extensions/v2/extensions",
+      await authHeaders("user-1"),
+      content
+    );
+    expect(created.status).toBe(201);
+    const { result } = (await created.json()) as {
+      result: { revision_id: string };
+    };
+    expect(
+      (
+        await post(
+          `/extensions/v2/extensions/${content.id}/revisions/${result.revision_id}/approve`,
+          await authHeaders("moderator"),
+          {}
+        )
+      ).status
+    ).toBe(200);
+    const published = (await (
+      await get(`/extensions/v2/extensions/${content.id}`, {})
+    ).json()) as { result: typeof content };
+    expect(published.result.requires).toEqual(requires);
+    expect(published.result.releases[0].requires).toEqual(requires);
+    expect((await get(`/extensions/v1/${content.id}`, {})).status).toBe(200);
+  });
+
   it("keeps the historical minimum-version field bounded in revision schemas", () => {
     const content = (minimum: string) => ({
       releases: [
@@ -178,7 +214,7 @@ describe("manifest v1 publishing", () => {
       { version: "1.0.0+" + "x".repeat(100) },
       { description: "x".repeat(501) },
       { name: "x".repeat(101) },
-      { requires: { fossbilling: "^1" } },
+      { requires: { fossbilling: "^1", php: null } },
       { requires: { fossbilling: "   ", php: ">=8.3" } },
       { requires: { fossbilling: "^1", php: "   " } },
       {
diff --git a/test/services/extensions/v2/migrations.test.ts b/test/services/extensions/v2/migrations.test.ts
index e6876314..9b8f5a47 100644
--- a/test/services/extensions/v2/migrations.test.ts
+++ b/test/services/extensions/v2/migrations.test.ts
@@ -1004,8 +1004,7 @@ it("migrates published manifest metadata without changing reviewed audit bodies"
       {
         tag: "1.0.0",
         date: "2026-01-01",
-        download_url: "https://example.com/a.zip",
-        min_fossbilling_version: "0.8.9"
+        download_url: "https://example.com/a.zip"
       },
       { ...olderRelease, min_fossbilling_version: "0.7.0" }
     ]);
@@ -1036,7 +1035,7 @@ it("migrates published manifest metadata without changing reviewed audit bodies"
       {
         id: "legacy",
         release_index: 0,
-        issue: expect.stringContaining("set explicit FOSSBilling and PHP")
+        issue: expect.stringContaining("supply a FOSSBilling constraint")
       }
     ]);
     // Existing over-quota collections must survive a structural backfill.
@@ -1052,7 +1051,7 @@ it("migrates published manifest metadata without changing reviewed audit bodies"
     expect(
       db.prepare("SELECT type FROM extensions WHERE id='legacy'").get()?.type
     ).toBe("mod");
-    const incompleteCorrection = `UPDATE extensions SET releases=json_set(releases,'$[0].requires',json('{"fossbilling":">=0.8.9"}')) WHERE id='legacy';`;
+    const incompleteCorrection = `UPDATE extensions SET releases=json_set(releases,'$[0].requires',json('{"fossbilling":">=0.8.9","php":null}')) WHERE id='legacy';`;
     db.exec("BEGIN");
     expect(() =>
       db.exec(
@@ -1205,7 +1204,9 @@ it.each([
   ],
   [
     "releases",
-    JSON.stringify([{ tag: "1.0.0", requires: { fossbilling: ">=0.8.9" } }]),
+    JSON.stringify([
+      { tag: "1.0.0", requires: { fossbilling: ">=0.8.9", php: null } }
+    ]),
     "requires:",
     0
   ],
@@ -1273,3 +1274,103 @@ it.each([
     }
   }
 );
+
+it.each(["", "v"])(
+  "migrates legacy requirements with %s-prefixed release tags",
+  (prefix) => {
+    const db = new DatabaseSync(":memory:");
+    try {
+      db.exec("PRAGMA foreign_keys=ON");
+      for (const name of migrationNames.filter((name) => name < "0029"))
+        db.exec(migration(name));
+      db.exec(
+        "INSERT INTO developers(id,type,name) VALUES('dev','organization','Developer')"
+      );
+      const fixtures = [
+        {
+          id: "legacy",
+          tags: ["1.0.0"],
+          minimum: "0.6",
+          initial: undefined,
+          expected: { fossbilling: ">=0.6" }
+        },
+        {
+          id: "BTCPay",
+          tags: ["0.1.5", "0.1.4", "0.1.3"],
+          minimum: "0.6",
+          initial: undefined,
+          expected: { fossbilling: ">=0.6", php: ">=8.1" }
+        },
+        {
+          id: "openreceive",
+          tags: ["0.4.29"],
+          minimum: "0.8.0",
+          initial: undefined,
+          expected: { fossbilling: ">=0.8.0", php: "^8.2" }
+        },
+        {
+          id: "partial",
+          tags: ["1.0.0"],
+          minimum: "0.6",
+          initial: { php: ">=8.4", modules: { branding: "^1" } },
+          expected: {
+            fossbilling: ">=0.6",
+            php: ">=8.4",
+            modules: { branding: "^1" }
+          }
+        }
+      ];
+      for (const fixture of fixtures) {
+        const releases = fixture.tags.map((tag) => ({
+          tag: prefix + tag,
+          date: "2026-01-01",
+          download_url: "https://example.com/release.zip",
+          min_fossbilling_version: fixture.minimum,
+          requires: fixture.initial
+        }));
+        db.prepare(
+          `INSERT INTO extensions(id,developer_id,type,name,description,releases,website,license,readme,source,version,download_url,published_at)
+        VALUES(?,'dev','mod','Legacy','Description',?,'','{"name":"MIT"}','README','{}',?,'https://example.com/release.zip','now')`
+        ).run(fixture.id, JSON.stringify(releases), fixture.tags[0]);
+      }
+      const preflight = readFileSync(
+        join(migrationsDirectory, "../manifest-preflight.sql"),
+        "utf8"
+      );
+      expect(db.prepare(preflight).all()).toEqual([]);
+      db.exec("BEGIN");
+      db.exec(migration("0029_align_manifest.sql"));
+      db.exec("COMMIT");
+      expect(db.prepare(preflight).all()).toEqual([]);
+      for (const fixture of fixtures) {
+        const row = db
+          .prepare("SELECT releases,manifest FROM extensions WHERE id=?")
+          .get(fixture.id)!;
+        const releases = JSON.parse(row.releases as string);
+        expect(releases.map((release: { tag: string }) => release.tag)).toEqual(
+          fixture.tags.map((tag) => prefix + tag)
+        );
+        for (const release of releases) {
+          expect(release.requires).toEqual(fixture.expected);
+          expect(release).not.toHaveProperty("min_fossbilling_version");
+        }
+        expect(JSON.parse(row.manifest as string).requires).toEqual(
+          fixture.expected
+        );
+      }
+      expect(
+        db
+          .prepare(
+            readFileSync(
+              join(migrationsDirectory, "../resource-inventory.sql"),
+              "utf8"
+            )
+          )
+          .all()
+      ).toEqual([]);
+      expect(db.prepare("PRAGMA foreign_key_check").all()).toEqual([]);
+    } finally {
+      db.close();
+    }
+  }
+);