diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index da84d9e..cb4e788 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -18,7 +18,7 @@ concurrency:
 env:
   CARGO_TERM_COLOR: always
   # Pinned toolchain for linting
-  ACTIONS_LINTS_TOOLCHAIN: 1.75.0
+  ACTIONS_LINTS_TOOLCHAIN: 1.86.0
 
 jobs:
   tests-stable:
diff --git a/Cargo.toml b/Cargo.toml
index 790b146..653e58f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,17 +2,17 @@
 authors = ["Colin Walters <walters@verbum.org>"]
 description = "Extension APIs for cap-std"
 edition = "2021"
-rust-version = "1.70.0"
+rust-version = "1.86.0"
 license = "MIT OR Apache-2.0"
 name = "cap-std-ext"
 readme = "README.md"
 repository = "https://github.com/coreos/cap-std-ext"
 # For historical reasons, the major version number is one greater than the cap-std major.
-version = "4.0.7"
+version = "5.0.0"
 
 [dependencies]
-cap-tempfile = "3.2.0"
-cap-primitives = "3"
+cap-tempfile = "4"
+cap-primitives = "4"
 
 [target.'cfg(not(windows))'.dependencies]
 rustix = { version = "1.0", features = ["fs", "process", "pipe"] }
diff --git a/src/dirext.rs b/src/dirext.rs
index 078ed3d..45694ca 100644
--- a/src/dirext.rs
+++ b/src/dirext.rs
@@ -425,7 +425,7 @@ enum DirOwnedOrBorrowed<'d> {
     Borrowed(&'d Dir),
 }
 
-impl<'d> Deref for DirOwnedOrBorrowed<'d> {
+impl Deref for DirOwnedOrBorrowed<'_> {
     type Target = Dir;
 
     fn deref(&self) -> &Self::Target {
@@ -662,7 +662,7 @@ impl CapStdExtDirExt for Dir {
                 if !self.symlink_metadata(p)?.is_dir() {
                     // TODO use https://doc.rust-lang.org/std/io/enum.ErrorKind.html#variant.NotADirectory
                     // once it's stable.
-                    return Err(io::Error::new(io::ErrorKind::Other, "Found non-directory"));
+                    return Err(io::Error::other("Found non-directory"));
                 }
                 Ok(false)
             }
@@ -829,7 +829,7 @@ impl CapStdExtDirExt for Dir {
 
     #[cfg(any(target_os = "android", target_os = "linux"))]
     fn is_mountpoint(&self, path: impl AsRef<Path>) -> Result<Option<bool>> {
-        is_mountpoint_impl_statx(self, path.as_ref()).map_err(Into::into)
+        is_mountpoint_impl_statx(self, path.as_ref())
     }
 
     #[cfg(any(target_os = "android", target_os = "linux"))]
diff --git a/tests/it/main.rs b/tests/it/main.rs
index a745b91..69f591b 100644
--- a/tests/it/main.rs
+++ b/tests/it/main.rs
@@ -316,7 +316,7 @@ fn link_tempfile_with() -> Result<()> {
     let e = td
         .atomic_replace_with(p, |f| {
             writeln!(f, "should not be written")?;
-            Err::<(), _>(std::io::Error::new(std::io::ErrorKind::Other, "oops"))
+            Err::<(), _>(std::io::Error::other("oops"))
         })
         .err()
         .unwrap();
@@ -625,7 +625,7 @@ fn test_walk() -> std::io::Result<()> {
     {
         let r: std::io::Result<_> = td.walk(&WalkConfiguration::default(), |e| {
             if e.path.strip_prefix("usr/share").is_ok() {
-                return Err(std::io::Error::new(std::io::ErrorKind::Other, "oops"));
+                return Err(std::io::Error::other("oops"));
             }
             Ok(ControlFlow::Continue(()))
         });