diff --git a/Cargo.toml b/Cargo.toml
index acc61634df..122e4bd6cc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,7 +24,7 @@ std = []
 clock = ["std", "winapi", "iana-time-zone"]
 oldtime = ["time"]
 wasmbind = ["wasm-bindgen", "js-sys"]
-unstable-locales = ["pure-rust-locales", "alloc"]
+unstable-locales = ["pure-rust-locales"]
 __internal_bench = ["criterion"]
 __doctest = []
 
diff --git a/src/date.rs b/src/date.rs
index 15f3d436d1..d8c5a6bd70 100644
--- a/src/date.rs
+++ b/src/date.rs
@@ -13,7 +13,7 @@ use core::{fmt, hash};
 #[cfg(feature = "rkyv")]
 use rkyv::{Archive, Deserialize, Serialize};
 
-#[cfg(feature = "unstable-locales")]
+#[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
 use crate::format::Locale;
 #[cfg(any(feature = "alloc", feature = "std"))]
 use crate::format::{DelayedFormat, Item, StrftimeItems};
@@ -357,8 +357,7 @@ where
     }
 
     /// Formats the date with the specified formatting items and locale.
-    #[cfg(feature = "unstable-locales")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))]
+    #[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
     #[inline]
     #[must_use]
     pub fn format_localized_with_items<'a, I, B>(
@@ -382,8 +381,7 @@ where
     /// Formats the date with the specified format string and locale.
     /// See the [`crate::format::strftime`] module
     /// on the supported escape sequences.
-    #[cfg(feature = "unstable-locales")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))]
+    #[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
     #[inline]
     #[must_use]
     pub fn format_localized<'a>(
diff --git a/src/datetime/mod.rs b/src/datetime/mod.rs
index 8cf3814a82..334d37769a 100644
--- a/src/datetime/mod.rs
+++ b/src/datetime/mod.rs
@@ -17,7 +17,7 @@ use std::time::{SystemTime, UNIX_EPOCH};
 
 #[cfg(any(feature = "alloc", feature = "std"))]
 use crate::format::DelayedFormat;
-#[cfg(feature = "unstable-locales")]
+#[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
 use crate::format::Locale;
 use crate::format::{parse, parse_and_remainder, ParseError, ParseResult, Parsed, StrftimeItems};
 use crate::format::{Fixed, Item};
@@ -837,8 +837,7 @@ where
     }
 
     /// Formats the combined date and time with the specified formatting items and locale.
-    #[cfg(feature = "unstable-locales")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))]
+    #[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
     #[inline]
     #[must_use]
     pub fn format_localized_with_items<'a, I, B>(
@@ -865,8 +864,7 @@ where
     ///
     /// See the [`crate::format::strftime`] module on the supported escape
     /// sequences.
-    #[cfg(feature = "unstable-locales")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))]
+    #[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
     #[inline]
     #[must_use]
     pub fn format_localized<'a>(
diff --git a/src/format/formatting.rs b/src/format/formatting.rs
index ea4cfc02bd..a4ed87a0cc 100644
--- a/src/format/formatting.rs
+++ b/src/format/formatting.rs
@@ -482,8 +482,7 @@ pub fn format_item(
 
 /// Tries to format given arguments with given formatting items.
 /// Internally used by `DelayedFormat`.
-#[cfg(feature = "unstable-locales")]
-#[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))]
+#[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
 #[deprecated(since = "0.4.27")]
 pub fn format_localized<'a, I, B>(
     w: &mut fmt::Formatter,
@@ -502,8 +501,7 @@ where
 }
 
 /// Formats single formatting item
-#[cfg(feature = "unstable-locales")]
-#[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))]
+#[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
 #[deprecated(since = "0.4.27")]
 pub fn format_item_localized(
     w: &mut fmt::Formatter,
diff --git a/src/format/mod.rs b/src/format/mod.rs
index a7ee67ccab..e27a1b2ade 100644
--- a/src/format/mod.rs
+++ b/src/format/mod.rs
@@ -56,7 +56,7 @@ pub use formatting::Formatter;
 #[cfg(any(feature = "alloc", feature = "std"))]
 pub use formatting::{format, format_item, DelayedFormat};
 #[allow(deprecated)]
-#[cfg(feature = "unstable-locales")]
+#[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
 pub use formatting::{format_item_localized, format_localized};
 #[cfg(any(feature = "alloc", feature = "std"))]
 pub(crate) use formatting::{write_rfc2822, write_rfc3339};
diff --git a/src/lib.rs b/src/lib.rs
index 8ef20fc58c..06fdff3adf 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -229,7 +229,7 @@
 //! # #[allow(unused_imports)]
 //! use chrono::prelude::*;
 //!
-//! # #[cfg(feature = "unstable-locales")]
+//! # #[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
 //! # fn test() {
 //! let dt = Utc.with_ymd_and_hms(2014, 11, 28, 12, 0, 9).unwrap();
 //! assert_eq!(dt.format("%Y-%m-%d %H:%M:%S").to_string(), "2014-11-28 12:00:09");
@@ -246,9 +246,9 @@
 //! let dt_nano = NaiveDate::from_ymd_opt(2014, 11, 28).unwrap().and_hms_nano_opt(12, 0, 9, 1).unwrap().and_local_timezone(Utc).unwrap();
 //! assert_eq!(format!("{:?}", dt_nano), "2014-11-28T12:00:09.000000001Z");
 //! # }
-//! # #[cfg(not(feature = "unstable-locales"))]
+//! # #[cfg(not(all(feature = "unstable-locales", any(feature = "alloc", feature = "std"))))]
 //! # fn test() {}
-//! # if cfg!(feature = "unstable-locales") {
+//! # if cfg!(all(feature = "unstable-locales", any(feature = "alloc", feature = "std"))) {
 //! #    test();
 //! # }
 //! ```
@@ -426,8 +426,7 @@ pub mod prelude {
     #[cfg_attr(docsrs, doc(cfg(feature = "clock")))]
     #[doc(no_inline)]
     pub use crate::Local;
-    #[cfg(feature = "unstable-locales")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))]
+    #[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
     #[doc(no_inline)]
     pub use crate::Locale;
     #[doc(no_inline)]
@@ -458,7 +457,6 @@ pub use datetime::{DateTime, SecondsFormat, MAX_DATETIME, MIN_DATETIME};
 pub mod format;
 /// L10n locales.
 #[cfg(feature = "unstable-locales")]
-#[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))]
 pub use format::Locale;
 pub use format::{ParseError, ParseResult};
 
diff --git a/src/naive/date.rs b/src/naive/date.rs
index 4afe9006b3..e4b22c4a0b 100644
--- a/src/naive/date.rs
+++ b/src/naive/date.rs
@@ -13,7 +13,7 @@ use core::{fmt, str};
 use rkyv::{Archive, Deserialize, Serialize};
 
 /// L10n locales.
-#[cfg(feature = "unstable-locales")]
+#[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
 use pure_rust_locales::Locale;
 
 #[cfg(any(feature = "alloc", feature = "std"))]
@@ -1304,8 +1304,7 @@ impl NaiveDate {
     }
 
     /// Formats the date with the specified formatting items and locale.
-    #[cfg(feature = "unstable-locales")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))]
+    #[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
     #[inline]
     #[must_use]
     pub fn format_localized_with_items<'a, I, B>(
@@ -1324,8 +1323,7 @@ impl NaiveDate {
     ///
     /// See the [`crate::format::strftime`] module on the supported escape
     /// sequences.
-    #[cfg(feature = "unstable-locales")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "unstable-locales")))]
+    #[cfg(all(feature = "unstable-locales", any(feature = "alloc", feature = "std")))]
     #[inline]
     #[must_use]
     pub fn format_localized<'a>(