diff --git a/ChangeLog.md b/ChangeLog.md
index 8091cc3..af4de54 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,11 @@
 # Change log
 
+## 4.1
+
+*2021.02.05*
+
+Support 9.0.1.
+
 ## 4.0
 
 *2020.12.31*
diff --git a/ghcups.psd1 b/ghcups.psd1
index 43865ff..dddfbac 100644
--- a/ghcups.psd1
+++ b/ghcups.psd1
@@ -12,7 +12,7 @@
 RootModule = 'ghcups.psm1'
 
 # このモジュールのバージョン番号です。
-ModuleVersion = '4.0'
+ModuleVersion = '4.1'
 
 # サポートされている PSEditions
 # CompatiblePSEditions = @()
@@ -98,7 +98,7 @@ PrivateData = @{
         Tags = @('Haskell', 'GHC', 'PSEdition_Core', 'Windows')
 
         # このモジュールのライセンスの URL。
-        LicenseUri = 'https://github.com/kakkun61/ghcups/blob/4.0/LICENSE'
+        LicenseUri = 'https://github.com/kakkun61/ghcups/blob/4.1/LICENSE'
 
         # このプロジェクトのメイン Web サイトの URL。
         ProjectUri = 'https://github.com/kakkun61/ghcups'
@@ -107,7 +107,7 @@ PrivateData = @{
         # IconUri = ''
 
         # このモジュールの ReleaseNotes
-        ReleaseNotes = 'https://github.com/kakkun61/ghcups/blob/4.0/ChangeLog.md'
+        ReleaseNotes = 'https://github.com/kakkun61/ghcups/blob/4.1/ChangeLog.md'
 
         ExternalModuleDependencies = @('Microsoft.PowerShell.Management', 'Microsoft.PowerShell.Utility')
 
diff --git a/ghcups.psm1 b/ghcups.psm1
index 8306f63..7d972f5 100644
--- a/ghcups.psm1
+++ b/ghcups.psm1
@@ -346,6 +346,16 @@ function Install-Ghc {
     7z x "-o$tempDir$fileName.tar" "$tempDir$fileName.tar.xz"
     7z x "-o$(Get-GhcupsInstall)" "$tempDir$fileName.tar"
 
+    $metas = Get-HashtaleItem 'ghc', $arch (Get-Config "$($MyInvocation.MyCommand.Module.ModuleBase)\version.yaml")
+    foreach ($meta in $metas) {
+        if ($meta -eq $Version) {
+            break
+        }
+        if ($meta -is [hashtable] -and $meta['version'] -eq $Version) {
+            Move-Item -Path "$(Get-GhcupsInstall)\$($meta['directory'])" -Destination "$(Get-GhcupsInstall)\ghc-$($meta['version'])"
+        }
+    }
+
     if ($Set) {
         Set-Ghc -Name $Version
     }
@@ -402,6 +412,9 @@ function Get-Ghc {
             $result.Add($version, @{ 'Supported' = $false; 'Path' = "$(Get-GhcupsInstall)\ghc-$version" })
         }
         foreach ($version in $supporteds) {
+            if ($version -is [hashtable]) {
+                $version = $version['version']
+            }
             if ($null -eq $result[$version]) {
                 $result.Add($version, @{ 'Supported' = $true; 'Path' = $null })
             }
diff --git a/version.yaml b/version.yaml
index ec168a5..5a39717 100644
--- a/version.yaml
+++ b/version.yaml
@@ -1,5 +1,7 @@
 ghc:
   x86_64:
+    - version: '9.0.1'
+      directory: ghc-9.0.1-x86_64-unknown-mingw32
     - '8.10.3'
     - '8.10.2'
     - '8.10.1'