diff --git a/src/Components/WebView/WebView/src/FileExtensionContentTypeProvider.cs b/src/Components/WebView/WebView/src/FileExtensionContentTypeProvider.cs
index eff1aa662bf5..dd965039c55a 100644
--- a/src/Components/WebView/WebView/src/FileExtensionContentTypeProvider.cs
+++ b/src/Components/WebView/WebView/src/FileExtensionContentTypeProvider.cs
@@ -58,6 +58,7 @@ public FileExtensionContentTypeProvider()
                 { ".atom", "application/atom+xml" },
                 { ".au", "audio/basic" },
                 { ".avi", "video/x-msvideo" },
+                { ".avif", "image/avif" },
                 { ".axs", "application/olescript" },
                 { ".bas", "text/plain" },
                 { ".bcpio", "application/x-bcpio" },
diff --git a/src/Middleware/StaticFiles/src/FileExtensionContentTypeProvider.cs b/src/Middleware/StaticFiles/src/FileExtensionContentTypeProvider.cs
index 541b43e3d1ae..b5d9a247c7bf 100644
--- a/src/Middleware/StaticFiles/src/FileExtensionContentTypeProvider.cs
+++ b/src/Middleware/StaticFiles/src/FileExtensionContentTypeProvider.cs
@@ -52,6 +52,7 @@ public FileExtensionContentTypeProvider()
                 { ".atom", "application/atom+xml" },
                 { ".au", "audio/basic" },
                 { ".avi", "video/x-msvideo" },
+                { ".avif", "image/avif" },
                 { ".axs", "application/olescript" },
                 { ".bas", "text/plain" },
                 { ".bcpio", "application/x-bcpio" },