diff --git a/Cargo.toml b/Cargo.toml
index 26bde051..59fb8ffb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ members = ["martin", "martin-tile-utils", "mbtiles"]
 edition = "2021"
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/maplibre/martin"
-rust-version = "1.70"
+rust-version = "1.74"
 readme = "README.md"
 homepage = "https://martin.maplibre.org/"
 
diff --git a/martin/src/mbtiles/mod.rs b/martin/src/mbtiles/mod.rs
index 3029fed0..d9ea2dfc 100644
--- a/martin/src/mbtiles/mod.rs
+++ b/martin/src/mbtiles/mod.rs
@@ -63,12 +63,7 @@ impl MbtSource {
     async fn new(id: String, path: PathBuf) -> FileResult<Self> {
         let mbt = MbtilesPool::new(&path)
             .await
-            .map_err(|e| {
-                io::Error::new(
-                    io::ErrorKind::Other,
-                    format!("{e:?}: Cannot open file {}", path.display()),
-                )
-            })
+            .map_err(|e| io::Error::other(format!("{e:?}: Cannot open file {}", path.display())))
             .map_err(|e| IoError(e, path.clone()))?;
 
         let meta = mbt
diff --git a/martin/src/pmtiles/mod.rs b/martin/src/pmtiles/mod.rs
index 3a9ddf0d..b24389a3 100644
--- a/martin/src/pmtiles/mod.rs
+++ b/martin/src/pmtiles/mod.rs
@@ -313,22 +313,12 @@ impl PmtFileSource {
     pub async fn new(cache: PmtCache, id: String, path: PathBuf) -> FileResult<Self> {
         let backend = MmapBackend::try_from(path.as_path())
             .await
-            .map_err(|e| {
-                io::Error::new(
-                    io::ErrorKind::Other,
-                    format!("{e:?}: Cannot open file {}", path.display()),
-                )
-            })
+            .map_err(|e| io::Error::other(format!("{e:?}: Cannot open file {}", path.display())))
             .map_err(|e| IoError(e, path.clone()))?;
 
         let reader = AsyncPmTilesReader::try_from_cached_source(backend, cache).await;
         let reader = reader
-            .map_err(|e| {
-                io::Error::new(
-                    io::ErrorKind::Other,
-                    format!("{e:?}: Cannot open file {}", path.display()),
-                )
-            })
+            .map_err(|e| io::Error::other(format!("{e:?}: Cannot open file {}", path.display())))
             .map_err(|e| IoError(e, path.clone()))?;
 
         Self::new_int(id, path, reader).await