diff --git a/crates/bin/Cargo.toml b/crates/bin/Cargo.toml
index 3102d1f3..662a42b2 100644
--- a/crates/bin/Cargo.toml
+++ b/crates/bin/Cargo.toml
@@ -4,7 +4,7 @@ description = "Binary installation for rust projects"
 repository = "https://github.com/cargo-bins/cargo-binstall"
 documentation = "https://docs.rs/cargo-binstall"
 version = "1.6.9"
-rust-version = "1.70.0"
+rust-version = "1.79.0"
 authors = ["ryan <ryan@kurte.nz>"]
 edition = "2021"
 license = "GPL-3.0-only"
diff --git a/crates/binstalk-downloader/Cargo.toml b/crates/binstalk-downloader/Cargo.toml
index 37600b5d..da674b45 100644
--- a/crates/binstalk-downloader/Cargo.toml
+++ b/crates/binstalk-downloader/Cargo.toml
@@ -4,7 +4,7 @@ description = "The binstall toolkit for downloading and extracting file"
 repository = "https://github.com/cargo-bins/cargo-binstall"
 documentation = "https://docs.rs/binstalk-downloader"
 version = "0.11.2"
-rust-version = "1.70.0"
+rust-version = "1.79.0"
 authors = ["ryan <ryan@kurte.nz>"]
 edition = "2021"
 license = "Apache-2.0 OR MIT"
diff --git a/crates/binstalk-downloader/src/download.rs b/crates/binstalk-downloader/src/download.rs
index 5c39973e..bfbd21f0 100644
--- a/crates/binstalk-downloader/src/download.rs
+++ b/crates/binstalk-downloader/src/download.rs
@@ -44,20 +44,8 @@ pub enum DownloadError {
 
 impl From<io::Error> for DownloadError {
     fn from(err: io::Error) -> Self {
-        if err.get_ref().is_some() {
-            let kind = err.kind();
-
-            let inner = err
-                .into_inner()
-                .expect("err.get_ref() returns Some, so err.into_inner() should also return Some");
-
-            inner
-                .downcast()
-                .map(|b| *b)
-                .unwrap_or_else(|err| DownloadError::Io(io::Error::new(kind, err)))
-        } else {
-            DownloadError::Io(err)
-        }
+        err.downcast::<DownloadError>()
+            .unwrap_or_else(DownloadError::Io)
     }
 }
 
diff --git a/crates/binstalk/Cargo.toml b/crates/binstalk/Cargo.toml
index 49b8ed21..104fd711 100644
--- a/crates/binstalk/Cargo.toml
+++ b/crates/binstalk/Cargo.toml
@@ -4,7 +4,7 @@ description = "The binstall toolkit (library interface)"
 repository = "https://github.com/cargo-bins/cargo-binstall"
 documentation = "https://docs.rs/binstalk"
 version = "0.24.0"
-rust-version = "1.65.0"
+rust-version = "1.79.0"
 authors = ["ryan <ryan@kurte.nz>"]
 edition = "2021"
 license = "GPL-3.0-only"
diff --git a/crates/binstalk/src/errors.rs b/crates/binstalk/src/errors.rs
index f367299d..80686ef1 100644
--- a/crates/binstalk/src/errors.rs
+++ b/crates/binstalk/src/errors.rs
@@ -530,20 +530,8 @@ impl Termination for BinstallError {
 
 impl From<io::Error> for BinstallError {
     fn from(err: io::Error) -> Self {
-        if err.get_ref().is_some() {
-            let kind = err.kind();
-
-            let inner = err
-                .into_inner()
-                .expect("err.get_ref() returns Some, so err.into_inner() should also return Some");
-
-            inner
-                .downcast()
-                .map(|b| *b)
-                .unwrap_or_else(|err| BinstallError::Io(io::Error::new(kind, err)))
-        } else {
-            BinstallError::Io(err)
-        }
+        err.downcast::<BinstallError>()
+            .unwrap_or_else(BinstallError::Io)
     }
 }