diff --git a/src/UmbracoFileSystemProviders.Azure/AzureFileSystem.cs b/src/UmbracoFileSystemProviders.Azure/AzureFileSystem.cs
index c837618..d6fbe0d 100644
--- a/src/UmbracoFileSystemProviders.Azure/AzureFileSystem.cs
+++ b/src/UmbracoFileSystemProviders.Azure/AzureFileSystem.cs
@@ -293,7 +293,7 @@ public void AddFile(string path, Stream stream, bool overrideIfExists)
                         }
                     }
 
-                    blockBlob.UploadFromStream(stream);
+                    blockBlob.UploadFromStreamAsync(stream).ConfigureAwait(false).GetAwaiter().GetResult();
 
                     string contentType = this.MimeTypeResolver.Resolve(path);