diff --git a/release_to_gitea.ps1 b/release_to_gitea.ps1
index d50f21e..15e86f2 100644
--- a/release_to_gitea.ps1
+++ b/release_to_gitea.ps1
@@ -186,22 +186,31 @@ Write-Host "[5/5] Deploying to Vercel..." -ForegroundColor Yellow
 $vercelDir = Join-Path $PSScriptRoot "web\download"
 Push-Location $vercelDir
 try {
-    $deployLines = vercel --prod --yes --no-color 2>&1
+    # Vercel CLI が stderr に "Vercel CLI x.x.x" を書くため、ErrorRecord を文字列に変換して収集する
+    $prevEap = $ErrorActionPreference
+    $ErrorActionPreference = 'Continue'
+    $deployLines = vercel --prod --yes --no-color 2>&1 | ForEach-Object { $_.ToString() }
+    $ErrorActionPreference = $prevEap
+
     $deployLines | ForEach-Object { Write-Host "  $_" }
 
-    # Extract deployment URL (format: "Production: https://...vercel.app [Ns]")
-    $prodLine = $deployLines | Where-Object { $_ -match "(?i)Production:\s+https://" } | Select-Object -First 1
+    # ANSI エスケープコード（カーソル移動等）を除去してから Production: 行を抽出
+    $cleanLines = $deployLines | ForEach-Object { $_ -replace '\x1B\[[0-9;]*[A-Za-z]', '' -replace '\x1B\[[\?][0-9;]*[A-Za-z]', '' }
+    $prodLine = $cleanLines | Where-Object { $_ -match "(?i)Production:\s+https://" } | Select-Object -First 1
     $prodUrl  = $null
     if ($prodLine -match 'https://\S+') {
-        $prodUrl = $Matches[0] -replace '\s.*$', ''
+        $prodUrl = ($Matches[0] -replace '\s.*$', '').Trim()
     }
 
     if ($prodUrl) {
         Write-Host "  Setting alias ponshu-room.vercel.app -> $prodUrl ..." -ForegroundColor Gray
-        vercel alias set $prodUrl ponshu-room.vercel.app --yes 2>&1 | ForEach-Object { Write-Host "  $_" }
+        $prevEap2 = $ErrorActionPreference
+        $ErrorActionPreference = 'Continue'
+        vercel alias set $prodUrl ponshu-room.vercel.app 2>&1 | ForEach-Object { Write-Host "  $_" }
+        $ErrorActionPreference = $prevEap2
         Write-Host "  OK: Alias set" -ForegroundColor Green
     } else {
-        Write-Host "  [WARN] Could not extract deployment URL from vercel output. Run manually:" -ForegroundColor Yellow
+        Write-Host "  [WARN] Could not extract deployment URL. Run manually:" -ForegroundColor Yellow
         Write-Host "    vercel alias set <deployment-url> ponshu-room.vercel.app" -ForegroundColor Yellow
     }
 } catch {
diff --git a/web/download/releases.json b/web/download/releases.json
index c2f246d..eea3762 100644
--- a/web/download/releases.json
+++ b/web/download/releases.json
@@ -1,18 +1,18 @@
-{
-    "date":  "2026-04-11",
-    "name":  "Ponshu Room 1.0.30 (2026-04-11)",
-    "version":  "v1.0.30",
+{
+    "date":  "2026-04-12",
+    "name":  "Ponshu Room 1.0.31 (2026-04-12)",
+    "version":  "v1.0.31",
     "apks":  {
                  "eiji":  {
                               "lite":  {
-                                           "url":  "https://posimai-lab.tail72e846.ts.net/mai/ponshu-room-lite/releases/download/v1.0.30/ponshu_room_consumer_eiji.apk",
+                                           "url":  "https://posimai-lab.tail72e846.ts.net/mai/ponshu-room-lite/releases/download/v1.0.31/ponshu_room_consumer_eiji.apk",
                                            "size_mb":  89.1,
                                            "filename":  "ponshu_room_consumer_eiji.apk"
                                        }
                           },
                  "maita":  {
                                "lite":  {
-                                            "url":  "https://posimai-lab.tail72e846.ts.net/mai/ponshu-room-lite/releases/download/v1.0.30/ponshu_room_consumer_maita.apk",
+                                            "url":  "https://posimai-lab.tail72e846.ts.net/mai/ponshu-room-lite/releases/download/v1.0.31/ponshu_room_consumer_maita.apk",
                                             "size_mb":  89.1,
                                             "filename":  "ponshu_room_consumer_maita.apk"
                                         }