diff --git a/credential/cargo-credential-libsecret/README.md b/credential/cargo-credential-libsecret/README.md
index a6af3b7575a..c781fe7cec7 100644
--- a/credential/cargo-credential-libsecret/README.md
+++ b/credential/cargo-credential-libsecret/README.md
@@ -5,6 +5,10 @@ See the [credential-provider] documentation for how to use this.
 
 This credential provider is built-in to cargo as `cargo:libsecret`.
 
+It is available on Unix-like platforms such as Linux and the BSDs.
+Apple and mobile platforms either use their OS-specific keyring,
+or libsecret doesn't exist there.
+
 > This crate is maintained by the Cargo team, primarily for use by Cargo
 > and not intended for external use (except as a transitive dependency). This
 > crate may make major changes to its APIs or be deprecated without warning.
diff --git a/credential/cargo-credential-libsecret/src/lib.rs b/credential/cargo-credential-libsecret/src/lib.rs
index 431cd987ff8..66e25773e82 100644
--- a/credential/cargo-credential-libsecret/src/lib.rs
+++ b/credential/cargo-credential-libsecret/src/lib.rs
@@ -2,7 +2,17 @@
 //! > and not intended for external use (except as a transitive dependency). This
 //! > crate may make major changes to its APIs or be deprecated without warning.
 
-#[cfg(target_os = "linux")]
+#[cfg(all(
+    unix,
+    not(any(
+        target_os = "macos",
+        target_os = "ios",
+        target_os = "tvos",
+        target_os = "watchos",
+        target_os = "visionos",
+        target_os = "android"
+    ))
+))]
 mod linux {
     //! Implementation of the libsecret credential helper.
 
@@ -259,7 +269,27 @@ mod linux {
     }
 }
 
-#[cfg(not(target_os = "linux"))]
+#[cfg(not(all(
+    unix,
+    not(any(
+        target_os = "macos",
+        target_os = "ios",
+        target_os = "tvos",
+        target_os = "watchos",
+        target_os = "visionos",
+        target_os = "android"
+    ))
+)))]
 pub use cargo_credential::UnsupportedCredential as LibSecretCredential;
-#[cfg(target_os = "linux")]
+#[cfg(all(
+    unix,
+    not(any(
+        target_os = "macos",
+        target_os = "ios",
+        target_os = "tvos",
+        target_os = "watchos",
+        target_os = "visionos",
+        target_os = "android"
+    ))
+))]
 pub use linux::LibSecretCredential;
diff --git a/doc/book/src/reference/registry-authentication.md b/doc/book/src/reference/registry-authentication.md
index 6a6c5ce2892..1f95f6c5161 100644
--- a/doc/book/src/reference/registry-authentication.md
+++ b/doc/book/src/reference/registry-authentication.md
@@ -55,6 +55,11 @@ The Keychain Access app can be used to view stored tokens.
 ### `cargo:libsecret`
 Uses [libsecret](https://wiki.gnome.org/Projects/Libsecret) to store tokens.
 
+It is available on Unix-like platforms such as Linux and the BSDs.
+Apple and mobile platforms either use their OS-specific keyring,
+or libsecret doesn't exist there. The `libsecret` library is loaded at
+runtime, so it only needs to be installed when this provider is used.
+
 Any password manager with libsecret support can be used to view stored tokens.
 The following are a few examples (non-exhaustive):
 
diff --git a/src/util/auth/mod.rs b/src/util/auth/mod.rs
index 4824a08c4c2..171fc8917c1 100644
--- a/src/util/auth/mod.rs
+++ b/src/util/auth/mod.rs
@@ -480,7 +480,17 @@ static BUILT_IN_PROVIDERS: &[&'static str] = &[
 
 /// Retrieves a cached instance of `LibSecretCredential`.
 /// Must be cached to avoid repeated load/unload cycles, which are not supported by `glib`.
-#[cfg(target_os = "linux")]
+#[cfg(all(
+    unix,
+    not(any(
+        target_os = "macos",
+        target_os = "ios",
+        target_os = "tvos",
+        target_os = "watchos",
+        target_os = "visionos",
+        target_os = "android"
+    ))
+))]
 fn get_credential_libsecret()
 -> CargoResult<&'static cargo_credential_libsecret::LibSecretCredential> {
     static CARGO_CREDENTIAL_LIBSECRET: std::sync::OnceLock<
@@ -535,7 +545,17 @@ fn credential_action(
             "cargo:wincred" => Box::new(cargo_credential_wincred::WindowsCredential {}),
             #[cfg(target_os = "macos")]
             "cargo:macos-keychain" => Box::new(cargo_credential_macos_keychain::MacKeychain {}),
-            #[cfg(target_os = "linux")]
+            #[cfg(all(
+                unix,
+                not(any(
+                    target_os = "macos",
+                    target_os = "ios",
+                    target_os = "tvos",
+                    target_os = "watchos",
+                    target_os = "visionos",
+                    target_os = "android"
+                ))
+            ))]
             "cargo:libsecret" => Box::new(get_credential_libsecret()?),
             name if BUILT_IN_PROVIDERS.contains(&name) => {
                 Box::new(cargo_credential::UnsupportedCredential {})