diff --git a/src/client.rs b/src/client.rs
index 6a81434..ff6fb48 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -803,7 +803,10 @@ ASYNC_SSH2_TEST_UPLOAD_FILE
     #[tokio::test]
     async fn client_can_upload_file() {
         let client = establish_test_host_connection().await;
-        let _ = client.upload_file(&env("ASYNC_SSH2_TEST_UPLOAD_FILE"), "/tmp/uploaded").await.unwrap();
+        let _ = client
+            .upload_file(&env("ASYNC_SSH2_TEST_UPLOAD_FILE"), "/tmp/uploaded")
+            .await
+            .unwrap();
         let result = client.execute("cat /tmp/uploaded").await.unwrap();
         assert_eq!(result.stdout, "this is a test file\n");
     }
diff --git a/tests/sshd-test/Dockerfile b/tests/sshd-test/Dockerfile
index cfb7531..896e3cf 100644
--- a/tests/sshd-test/Dockerfile
+++ b/tests/sshd-test/Dockerfile
@@ -2,7 +2,7 @@ FROM linuxkit/sshd:62036c2a279715d05e8298b9269a0659964f2619-amd64
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
-RUN apk add openssh-sftp-server
+RUN apk add openssh-sftp-server=9.1_p1-r5
 
 # hadolint ignore=DL3006
 RUN echo 'root:root' |chpasswd