diff --git a/Winget-AutoUpdate-Install.ps1 b/Winget-AutoUpdate-Install.ps1
index 301d4dd..078ba13 100644
--- a/Winget-AutoUpdate-Install.ps1
+++ b/Winget-AutoUpdate-Install.ps1
@@ -111,6 +111,8 @@ function Install-WingetAutoUpdate{
             New-Item -ItemType Directory -Force -Path $WingetUpdatePath
         }
         Copy-Item -Path "$PSScriptRoot\Winget-AutoUpdate\*" -Destination $WingetUpdatePath -Recurse -Force -ErrorAction SilentlyContinue
+        #Add 'mods' directory
+        New-Item -ItemType Directory -Force -Path "$WingetUpdatePath\mods"
         
         #White List or Black List apps
         if ($UseWhiteList){
diff --git a/Winget-AutoUpdate/functions/Test-Mods.ps1 b/Winget-AutoUpdate/functions/Test-Mods.ps1
new file mode 100644
index 0000000..dba00a1
--- /dev/null
+++ b/Winget-AutoUpdate/functions/Test-Mods.ps1
@@ -0,0 +1,18 @@
+#Function to check if modification exists in 'mods' directory
+
+function Test-Mods ($app){
+
+    if (Test-Path "$WorkingDir\mods\$app-install.ps1"){
+        $ModsInstall = "$WorkingDir\mods\$app-install.ps1"
+        $ModsUpgrade = "$WorkingDir\mods\$app-install.ps1"
+    }
+    if (Test-Path "$WorkingDir\mods\$app-upgrade.ps1"){
+        $ModsUpgrade = "$WorkingDir\mods\$app-upgrade.ps1"
+    }
+    else{
+        return 0
+    }
+
+    return $ModsInstall,$ModsUpgrade
+    
+}
\ No newline at end of file
diff --git a/Winget-AutoUpdate/functions/Update-App.ps1 b/Winget-AutoUpdate/functions/Update-App.ps1
index c11920d..d013345 100644
--- a/Winget-AutoUpdate/functions/Update-App.ps1
+++ b/Winget-AutoUpdate/functions/Update-App.ps1
@@ -16,6 +16,13 @@ Function Update-App ($app) {
     #Run Winget Upgrade command
     & $Winget upgrade --id $($app.Id) --all --accept-package-agreements --accept-source-agreements -h | Tee-Object -file $LogFile -Append
     
+    #Check if mods exist
+    $ModsUpgrade = Test-Mods $($app.Id)
+    if ($ModsUpgrade){
+        Write-Log "Modifications for $($app.Id) during upgrade are being applied..." "Yellow"
+        & "$ModsUpgrade"
+    }
+
     #Check if application updated properly
     $CheckOutdated = Get-WingetOutdatedApps
     $FailedToUpgrade = $false
@@ -24,6 +31,13 @@ Function Update-App ($app) {
             
             #If app failed to upgrade, run Install command
             & $Winget install --id $($app.Id) --accept-package-agreements --accept-source-agreements -h | Tee-Object -file $LogFile -Append
+
+            #Check if mods exist
+            $ModsInstall = Test-Mods $($app.Id)
+            if ($ModsInstall){
+                Write-Log "Modifications for $($app.Id) during install are being applied..." "Yellow"
+                & "$ModsInstall"
+            }
             
             #Check if application installed properly
             $CheckOutdated2 = Get-WingetOutdatedApps
diff --git a/Winget-AutoUpdate/functions/Update-WAU.ps1 b/Winget-AutoUpdate/functions/Update-WAU.ps1
index c46c9d2..74b7018 100644
--- a/Winget-AutoUpdate/functions/Update-WAU.ps1
+++ b/Winget-AutoUpdate/functions/Update-WAU.ps1
@@ -31,6 +31,10 @@ function Update-WAU {
         $TempPath = (Resolve-Path "$location\*\Winget-AutoUpdate\")[0].Path
         if ($TempPath){
             Copy-Item -Path "$TempPath\*" -Destination "$WorkingDir\" -Exclude "icons" -Recurse -Force
+            #Add 'mods' directory
+            if (!(Test-Path "$WorkingDir\mods")){
+                New-Item -ItemType Directory -Force -Path "$WingetUpdatePath\mods"
+            }
         }
         
         #Remove update zip file and update temp folder