diff --git a/wix/Banner.bmp b/wix/Banner.bmp
deleted file mode 100644
index 36791c8..0000000
Binary files a/wix/Banner.bmp and /dev/null differ
diff --git a/wix/Banner.webp b/wix/Banner.webp
new file mode 100644
index 0000000..08a05b0
Binary files /dev/null and b/wix/Banner.webp differ
diff --git a/wix/Dialog.bmp b/wix/Dialog.bmp
deleted file mode 100644
index f221c77..0000000
Binary files a/wix/Dialog.bmp and /dev/null differ
diff --git a/wix/Dialog.webp b/wix/Dialog.webp
new file mode 100644
index 0000000..09779b2
Binary files /dev/null and b/wix/Dialog.webp differ
diff --git a/wix/main.wxs b/wix/main.wxs
index 1175314..9708fcb 100644
--- a/wix/main.wxs
+++ b/wix/main.wxs
@@ -196,7 +196,7 @@
 
           The banner BMP dimensions are 493 x 58 pixels.
         -->
-        <WixVariable Id='WixUIBannerBmp' Value='wix\Banner.bmp'/>
+        <WixVariable Id='WixUIBannerBmp' Value='wix\Banner.webp'/>
 
         
         <!--
@@ -207,7 +207,7 @@
 
           The dialog BMP dimensions are 493 x 312 pixels.
         -->
-        <WixVariable Id='WixUIDialogBmp' Value='wix\Dialog.bmp'/>
+        <WixVariable Id='WixUIDialogBmp' Value='wix\Dialog.webp'/>
 
     </Product>