diff --git a/Cargo.lock b/Cargo.lock
index 1f08072..9c73d41 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5250,7 +5250,7 @@ checksum = "5b8a1e28f2deaa14e508979454cb3a223b10b938b45af148bc0986de36f1923b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.60",
+ "syn 2.0.63",
 ]
 
 [[package]]
diff --git a/src/tab.rs b/src/tab.rs
index 2bc64d0..709e238 100644
--- a/src/tab.rs
+++ b/src/tab.rs
@@ -2407,7 +2407,9 @@ impl Tab {
                         |mut output| async move {
                             let (path, thumbnail) = tokio::task::spawn_blocking(move || {
                                 let start = std::time::Instant::now();
-                                let thumbnail = match image::io::Reader::open(&path) {
+                                let thumbnail = match image::io::Reader::open(&path)
+                                    .and_then(|img| img.with_guessed_format())
+                                {
                                     Ok(reader) => match reader.decode() {
                                         Ok(image) => {
                                             //TODO: configurable thumbnail size?