diff --git a/Sources/CryptomatorCloudAccess/API/CloudProvider.swift b/Sources/CryptomatorCloudAccess/API/CloudProvider.swift
index 07ed669..090c8ec 100644
--- a/Sources/CryptomatorCloudAccess/API/CloudProvider.swift
+++ b/Sources/CryptomatorCloudAccess/API/CloudProvider.swift
@@ -66,6 +66,7 @@ public protocol CloudProvider {
 	 - Parameter replaceExisting: If true, overwrite the existing file at `cloudPath`.
 	 - Precondition: `localURL` must be a file URL.
 	 - Postcondition: The file is stored at `cloudPath`.
+	 - Postcondition: The `size` property of the returned metadata is set to the size of the uploaded file in the cloud and must not be `nil`.
 	 - Returns: Promise with the metadata of the uploaded file. If the upload fails, promise is rejected with:
 	   - `CloudProviderError.itemNotFound` if the file does not exist at the `localURL`.
 	   - `CloudProviderError.itemAlreadyExists` if the file already exists at the `cloudPath` with `!replaceExisting` or the cloud provider finds a folder instead of a file at `cloudPath` with `replaceExisting`.
diff --git a/Sources/CryptomatorCloudAccess/GoogleDrive/GoogleDriveCloudProvider.swift b/Sources/CryptomatorCloudAccess/GoogleDrive/GoogleDriveCloudProvider.swift
index a5c279e..33820a4 100644
--- a/Sources/CryptomatorCloudAccess/GoogleDrive/GoogleDriveCloudProvider.swift
+++ b/Sources/CryptomatorCloudAccess/GoogleDrive/GoogleDriveCloudProvider.swift
@@ -398,7 +398,6 @@ public class GoogleDriveCloudProvider: CloudProvider {
 				return Promise(CloudProviderError.itemAlreadyExists)
 			}
 			let query = GTLRDriveQuery_FilesUpdate.query(withObject: metadata, fileId: item.identifier, uploadParameters: uploadParameters)
-			query.fields = "id, name, modifiedTime, mimeType"
 			return Promise(query)
 		}.recover { error -> GTLRDriveQuery in
 			guard case CloudProviderError.itemNotFound = error else {
@@ -407,6 +406,9 @@ public class GoogleDriveCloudProvider: CloudProvider {
 			metadata.parents = [parentItem.identifier]
 			let query = GTLRDriveQuery_FilesCreate.query(withObject: metadata, uploadParameters: uploadParameters)
 			return query
+		}.then { query -> GTLRDriveQuery in
+			query.fields = "id, name, modifiedTime, mimeType, size"
+			return query
 		}
 	}
 
diff --git a/Tests/CryptomatorCloudAccessIntegrationTests/CloudAccessIntegrationTest.swift b/Tests/CryptomatorCloudAccessIntegrationTests/CloudAccessIntegrationTest.swift
index e841652..2af5d95 100644
--- a/Tests/CryptomatorCloudAccessIntegrationTests/CloudAccessIntegrationTest.swift
+++ b/Tests/CryptomatorCloudAccessIntegrationTests/CloudAccessIntegrationTest.swift
@@ -540,12 +540,14 @@ class CloudAccessIntegrationTest: XCTestCase {
 			print("\(progress.localizedDescription ?? "") (\(progress.localizedAdditionalDescription ?? ""))")
 		}
 		progress.becomeCurrent(withPendingUnitCount: 1)
-		provider.uploadFile(from: initialLocalURL, to: cloudPath, replaceExisting: false).then { _ -> Promise<CloudItemMetadata> in
+		provider.uploadFile(from: initialLocalURL, to: cloudPath, replaceExisting: false).then { cloudItemMetadata -> Promise<CloudItemMetadata> in
 			XCTAssertTrue(progress.completedUnitCount >= progress.totalUnitCount)
+			self.assertReceivedCorrectMetadataAfterUploading(file: initialLocalURL, to: cloudPath, metadata: cloudItemMetadata)
 			try overwrittenTestContent.write(to: initialLocalURL, atomically: true, encoding: .utf8)
 			return self.provider.uploadFile(from: initialLocalURL, to: cloudPath, replaceExisting: true)
-		}.then { _ in
-			self.provider.downloadFile(from: cloudPath, to: overwrittenLocalURL)
+		}.then { cloudItemMetadata -> Promise<Void> in
+			self.assertReceivedCorrectMetadataAfterUploading(file: initialLocalURL, to: cloudPath, metadata: cloudItemMetadata)
+			return self.provider.downloadFile(from: cloudPath, to: overwrittenLocalURL)
 		}.then { _ in
 			self.provider.deleteFile(at: cloudPath)
 		}.then {
@@ -969,6 +971,22 @@ class CloudAccessIntegrationTest: XCTestCase {
 		}
 		wait(for: [expectation], timeout: 30.0)
 	}
+
+	private func assertReceivedCorrectMetadataAfterUploading(file localURL: URL, to cloudPath: CloudPath, metadata: CloudItemMetadata) {
+		let localFileSize: Int?
+		do {
+			let attributes = try FileManager.default.attributesOfItem(atPath: localURL.path)
+			localFileSize = attributes[FileAttributeKey.size] as? Int
+		} catch {
+			XCTFail("Get local file size failed with error: \(error)")
+			return
+		}
+		XCTAssertEqual(cloudPath, metadata.cloudPath)
+		XCTAssertEqual(cloudPath.lastPathComponent, metadata.name)
+		XCTAssertEqual(localFileSize, metadata.size)
+		XCTAssertNotNil(metadata.size)
+		XCTAssertEqual(.file, metadata.itemType)
+	}
 }
 
 extension CloudItemMetadata: Comparable {