diff --git a/.github/workflows/build-plugin.yml b/.github/workflows/build-plugin.yml
index 9ca46a2ba..c166be91e 100644
--- a/.github/workflows/build-plugin.yml
+++ b/.github/workflows/build-plugin.yml
@@ -29,6 +29,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Validate registry update script
+        run: python3 .github/scripts/test_update_registry.py
+
       - name: Read currentPluginKitVersion
         id: pkv
         run: |
diff --git a/scripts/migrate-registry-v1-to-v2.py b/scripts/migrate-registry-v1-to-v2.py
deleted file mode 100755
index 78eef7ba0..000000000
--- a/scripts/migrate-registry-v1-to-v2.py
+++ /dev/null
@@ -1,75 +0,0 @@
-#!/usr/bin/env python3
-"""
-One-time migration: convert plugins.json from schema v1 to v2.
-
-Reads minPluginKitVersion from each plugin entry (or defaults to --assumed-pkv)
-and copies it into each binary as pluginKitVersion. Removes the flat
-downloadURL/sha256/minPluginKitVersion top-level fields.
-
-Usage:
-  python3 scripts/migrate-registry-v1-to-v2.py \
-    --manifest /path/to/plugins.json \
-    --assumed-pkv 13
-"""
-
-import argparse
-import json
-import os
-import sys
-import tempfile
-
-
-def main():
-    parser = argparse.ArgumentParser()
-    parser.add_argument("--manifest", required=True)
-    parser.add_argument(
-        "--assumed-pkv",
-        type=int,
-        required=True,
-        help="PluginKit version to assign to binaries that lack an explicit minPluginKitVersion",
-    )
-    args = parser.parse_args()
-
-    with open(args.manifest, "r", encoding="utf-8") as file:
-        manifest = json.load(file)
-
-    plugins = manifest.get("plugins", [])
-    for plugin in plugins:
-        # CI historically hardcoded minPluginKitVersion: 2 regardless of the actual
-        # binary ABI. Always trust --assumed-pkv over the stored value.
-        binaries = plugin.get("binaries", [])
-        migrated = []
-        for binary in binaries:
-            migrated.append({
-                "architecture": binary["architecture"],
-                "pluginKitVersion": args.assumed_pkv,
-                "downloadURL": binary["downloadURL"],
-                "sha256": binary["sha256"],
-            })
-
-        plugin["binaries"] = migrated
-
-        for field in ("downloadURL", "sha256", "minPluginKitVersion"):
-            plugin.pop(field, None)
-
-    manifest["schemaVersion"] = 2
-
-    dir_path = os.path.dirname(os.path.abspath(args.manifest))
-    fd, tmp = tempfile.mkstemp(dir=dir_path, suffix=".tmp")
-    try:
-        with os.fdopen(fd, "w", encoding="utf-8") as file:
-            json.dump(manifest, file, indent=2)
-            file.write("\n")
-        os.replace(tmp, args.manifest)
-    except Exception:
-        try:
-            os.unlink(tmp)
-        except OSError:
-            pass
-        raise
-
-    print(f"Migrated {len(plugins)} plugins to schema v2")
-
-
-if __name__ == "__main__":
-    main()