diff --git a/fuzz/Cargo.lock b/fuzz/Cargo.lock
index 2b519a989f3..833a5799dce 100644
--- a/fuzz/Cargo.lock
+++ b/fuzz/Cargo.lock
@@ -53,7 +53,7 @@ version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
 dependencies = [
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -64,7 +64,7 @@ checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
 dependencies = [
  "anstyle",
  "once_cell_polyfill",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -184,9 +184,9 @@ dependencies = [
 
 [[package]]
 name = "bumpalo"
-version = "3.19.0"
+version = "3.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46c5e41b57b8bba42a04676d81cb89e9ee8e859a1a66f80a5a72e1cb76b34d43"
+checksum = "5dd9dc738b7a8311c7ade152424974d8115f2cdad61e8dab8dac9f2362298510"
 
 [[package]]
 name = "bytecount"
@@ -196,9 +196,9 @@ checksum = "175812e0be2bccb6abe50bb8d566126198344f707e304f45c648fd8f2cc0365e"
 
 [[package]]
 name = "cc"
-version = "1.2.48"
+version = "1.2.50"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c481bdbf0ed3b892f6f806287d72acd515b352a4ec27a208489b8c1bc839633a"
+checksum = "9f50d563227a1c37cc0a263f64eca3334388c01c5e4c4861a9def205c614383c"
 dependencies = [
  "find-msvc-tools",
  "jobserver",
@@ -325,9 +325,9 @@ dependencies = [
 
 [[package]]
 name = "crc"
-version = "3.4.0"
+version = "3.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5eb8a2a1cd12ab0d987a5d5e825195d372001a4094a0376319d5a0ad71c1ba0d"
+checksum = "9710d3b3739c2e349eb44fe848ad0b7c8cb1e42bd87ee49371df2f7acaf3e675"
 dependencies = [
  "crc-catalog",
 ]
@@ -340,9 +340,9 @@ checksum = "19d374276b40fb8bbdee95aef7c7fa6b5316ec764510eb64b8dd0e2ed0d7e7f5"
 
 [[package]]
 name = "crc-fast"
-version = "1.8.0"
+version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2f7c8d397a6353ef0c1d6217ab91b3ddb5431daf57fd013f506b967dcf44458"
+checksum = "2fd92aca2c6001b1bf5ba0ff84ee74ec8501b52bbef0cac80bf25a6c1d87a83d"
 dependencies = [
  "crc",
  "digest",
@@ -504,7 +504,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -519,6 +519,17 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a3076410a55c90011c298b04d0cfa770b00fa04e1e3c97d3f6c9de105a03844"
 
+[[package]]
+name = "fixed_decimal"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35eabf480f94d69182677e37571d3be065822acfafd12f2f085db44fbbcc8e57"
+dependencies = [
+ "displaydoc",
+ "smallvec",
+ "writeable",
+]
+
 [[package]]
 name = "flate2"
 version = "1.1.5"
@@ -693,6 +704,27 @@ dependencies = [
  "zerovec",
 ]
 
+[[package]]
+name = "icu_decimal"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a38c52231bc348f9b982c1868a2af3195199623007ba2c7650f432038f5b3e8e"
+dependencies = [
+ "fixed_decimal",
+ "icu_decimal_data",
+ "icu_locale",
+ "icu_locale_core",
+ "icu_provider",
+ "writeable",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_decimal_data"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2905b4044eab2dd848fe84199f9195567b63ab3a93094711501363f63546fef7"
+
 [[package]]
 name = "icu_locale"
 version = "2.1.1"
@@ -753,9 +785,9 @@ checksum = "7aedcccd01fc5fe81e6b489c15b247b8b0690feb23304303a9e560f37efc560a"
 
 [[package]]
 name = "icu_properties"
-version = "2.1.1"
+version = "2.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e93fcd3157766c0c8da2f8cff6ce651a31f0810eaa1c51ec363ef790bbb5fb99"
+checksum = "020bfc02fe870ec3a66d93e677ccca0562506e5872c650f893269e08615d74ec"
 dependencies = [
  "icu_collections",
  "icu_locale_core",
@@ -767,9 +799,9 @@ dependencies = [
 
 [[package]]
 name = "icu_properties_data"
-version = "2.1.1"
+version = "2.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02845b3647bb045f1100ecd6480ff52f34c35f82d9880e029d329c21d1054899"
+checksum = "616c294cf8d725c6afcd8f55abc17c56464ef6211f9ed59cccffe534129c77af"
 
 [[package]]
 name = "icu_provider"
@@ -824,9 +856,9 @@ dependencies = [
 
 [[package]]
 name = "jiff"
-version = "0.2.16"
+version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49cce2b81f2098e7e3efc35bc2e0a6b7abec9d34128283d7a26fa8f32a6dbb35"
+checksum = "a87d9b8105c23642f50cbbae03d1f75d8422c5cb98ce7ee9271f7ff7505be6b8"
 dependencies = [
  "jiff-static",
  "jiff-tzdb-platform",
@@ -834,14 +866,14 @@ dependencies = [
  "portable-atomic",
  "portable-atomic-util",
  "serde_core",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "jiff-static"
-version = "0.2.16"
+version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "980af8b43c3ad5d8d349ace167ec8170839f753a42d233ba19e08afe1850fa69"
+checksum = "b787bebb543f8969132630c51fd0afab173a86c6abae56ff3b9e5e3e3f9f6e58"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -850,9 +882,9 @@ dependencies = [
 
 [[package]]
 name = "jiff-tzdb"
-version = "0.1.4"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1283705eb0a21404d2bfd6eef2a7593d240bc42a0bdb39db0ad6fa2ec026524"
+checksum = "68971ebff725b9e2ca27a601c5eb38a4c5d64422c4cbab0c535f248087eda5c2"
 
 [[package]]
 name = "jiff-tzdb-platform"
@@ -1119,9 +1151,9 @@ checksum = "7edddbd0b52d732b21ad9a5fab5c704c14cd949e5e9a1ec5929a24fded1b904c"
 
 [[package]]
 name = "portable-atomic"
-version = "1.11.1"
+version = "1.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f84267b20a16ea918e43c6a88433c2d54fa145c92a811b5b047ccbe153674483"
+checksum = "f59e70c4aef1e55797c2e8fd94a4f2a973fc972cfde0e0b05f683667b0cd39dd"
 
 [[package]]
 name = "portable-atomic-util"
@@ -1273,15 +1305,15 @@ checksum = "357703d41365b4b27c590e3ed91eabb1b663f07c4c084095e60cbed4362dff0d"
 
 [[package]]
 name = "rustix"
-version = "1.1.2"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd15f8a2c5551a84d56efdc1cd049089e409ac19a3072d5037a17fd70719ff3e"
+checksum = "146c9e247ccc180c1f61615433868c99f3de3ae256a30a43b49f67c2d9171f34"
 dependencies = [
  "bitflags",
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -1366,9 +1398,9 @@ checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
 [[package]]
 name = "simd-adler32"
-version = "0.3.7"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
+checksum = "e320a6c5ad31d271ad523dcf3ad13e2767ad8b1cb8f047f75a8aeaf8da139da2"
 
 [[package]]
 name = "similar"
@@ -1439,15 +1471,15 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.23.0"
+version = "3.24.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d31c77bdf42a745371d260a26ca7163f1e0924b64afa0b688e61b5a9fa02f16"
+checksum = "655da9c7eb6305c55742045d5a8d2037996d61d8de95806335c7c86ce0f82e9c"
 dependencies = [
  "fastrand",
  "getrandom 0.3.4",
  "once_cell",
  "rustix",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -1748,7 +1780,9 @@ dependencies = [
  "glob",
  "hex",
  "icu_collator",
+ "icu_decimal",
  "icu_locale",
+ "icu_provider",
  "itertools",
  "libc",
  "md-5",
@@ -1902,7 +1936,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
diff --git a/src/uu/sort/Cargo.toml b/src/uu/sort/Cargo.toml
index 184f6776be7..e0f31c3c18c 100644
--- a/src/uu/sort/Cargo.toml
+++ b/src/uu/sort/Cargo.toml
@@ -34,7 +34,12 @@ self_cell = { workspace = true }
 tempfile = { workspace = true }
 thiserror = { workspace = true }
 unicode-width = { workspace = true }
-uucore = { workspace = true, features = ["fs", "parser-size", "version-cmp"] }
+uucore = { workspace = true, features = [
+  "fs",
+  "parser-size",
+  "version-cmp",
+  "i18n-decimal",
+] }
 fluent = { workspace = true }
 
 [target.'cfg(unix)'.dependencies]
diff --git a/src/uu/sort/src/sort.rs b/src/uu/sort/src/sort.rs
index 65ab9911b92..34d41be0686 100644
--- a/src/uu/sort/src/sort.rs
+++ b/src/uu/sort/src/sort.rs
@@ -45,6 +45,7 @@ use uucore::error::{FromIo, strip_errno};
 use uucore::error::{UError, UResult, USimpleError, UUsageError};
 use uucore::extendedbigdecimal::ExtendedBigDecimal;
 use uucore::format_usage;
+use uucore::i18n::decimal::locale_decimal_separator;
 use uucore::line_ending::LineEnding;
 use uucore::parser::num_parser::{ExtendedParser, ExtendedParserError};
 use uucore::parser::parse_size::{ParseSizeError, Parser};
@@ -113,6 +114,24 @@ mod options {
 
 const DECIMAL_PT: u8 = b'.';
 
+fn locale_decimal_pt() -> u8 {
+    match locale_decimal_separator().as_bytes().first().copied() {
+        Some(b'.') => b'.',
+        Some(b',') => b',',
+        _ => DECIMAL_PT,
+    }
+}
+
+fn effective_decimal_pt(input: &[u8], locale_decimal: u8) -> u8 {
+    if locale_decimal == b',' {
+        let has_comma = input.contains(&b',');
+        if !has_comma && input.contains(&b'.') {
+            return b'.';
+        }
+    }
+    locale_decimal
+}
+
 const NEGATIVE: &u8 = &b'-';
 const POSITIVE: &u8 = &b'+';
 
@@ -637,8 +656,9 @@ impl<'a> Line<'a> {
                 }
                 SortMode::GeneralNumeric => {
                     let initial_selection = &self.line[selection.clone()];
-
-                    let leading = get_leading_gen(initial_selection);
+                    let locale_decimal = locale_decimal_pt();
+                    let decimal_pt = effective_decimal_pt(initial_selection, locale_decimal);
+                    let leading = get_leading_gen(initial_selection, decimal_pt);
 
                     // Shorten selection to leading.
                     selection.start += leading.start;
@@ -965,7 +985,12 @@ impl FieldSelector {
             Selection::WithNumInfo(range_str, info)
         } else if self.settings.mode == SortMode::GeneralNumeric {
             // Parse this number as BigDecimal, as this is the requirement for general numeric sorting.
-            Selection::AsBigDecimal(general_bd_parse(&range_str[get_leading_gen(range_str)]))
+            let locale_decimal = locale_decimal_pt();
+            let decimal_pt = effective_decimal_pt(range_str, locale_decimal);
+            Selection::AsBigDecimal(general_bd_parse(
+                &range_str[get_leading_gen(range_str, decimal_pt)],
+                decimal_pt,
+            ))
         } else {
             // This is not a numeric sort, so we don't need a NumCache.
             Selection::Str(range_str)
@@ -2020,7 +2045,7 @@ fn ascii_case_insensitive_cmp(a: &[u8], b: &[u8]) -> Ordering {
 // scientific notation, so we strip those lines only after the end of the following numeric string.
 // For example, 5e10KFD would be 5e10 or 5x10^10 and +10000HFKJFK would become 10000.
 #[allow(clippy::cognitive_complexity)]
-fn get_leading_gen(inp: &[u8]) -> Range<usize> {
+fn get_leading_gen(inp: &[u8], decimal_pt: u8) -> Range<usize> {
     let trimmed = inp.trim_ascii_start();
     let leading_whitespace_len = inp.len() - trimmed.len();
 
@@ -2058,7 +2083,7 @@ fn get_leading_gen(inp: &[u8]) -> Range<usize> {
             continue;
         }
 
-        if c == DECIMAL_PT && !had_decimal_pt && !had_e_notation {
+        if c == decimal_pt && !had_decimal_pt && !had_e_notation {
             had_decimal_pt = true;
             continue;
         }
@@ -2101,9 +2126,16 @@ pub enum GeneralBigDecimalParseResult {
 /// Parse the beginning string into a [`GeneralBigDecimalParseResult`].
 /// Using a [`GeneralBigDecimalParseResult`] instead of [`ExtendedBigDecimal`] is necessary to correctly order floats.
 #[inline(always)]
-fn general_bd_parse(a: &[u8]) -> GeneralBigDecimalParseResult {
+fn general_bd_parse(a: &[u8], decimal_pt: u8) -> GeneralBigDecimalParseResult {
+    let parsed_bytes = (decimal_pt != DECIMAL_PT).then(|| {
+        a.iter()
+            .map(|&b| if b == decimal_pt { DECIMAL_PT } else { b })
+            .collect::<Vec<_>>()
+    });
+    let input = parsed_bytes.as_deref().unwrap_or(a);
+
     // The string should be valid ASCII to be parsed.
-    let Ok(a) = std::str::from_utf8(a) else {
+    let Ok(a) = std::str::from_utf8(input) else {
         return GeneralBigDecimalParseResult::Invalid;
     };
 
diff --git a/tests/by-util/test_sort.rs b/tests/by-util/test_sort.rs
index 99d388da0f1..18dec73db4a 100644
--- a/tests/by-util/test_sort.rs
+++ b/tests/by-util/test_sort.rs
@@ -1559,6 +1559,32 @@ fn test_g_float() {
         .stdout_is(output);
 }
 
+#[test]
+fn test_g_float_locale_decimal_separator() {
+    let Ok(locale_fr_utf8) = env::var("LOCALE_FR_UTF8") else {
+        return;
+    };
+    if locale_fr_utf8 == "none" {
+        return;
+    }
+
+    let ts = TestScenario::new("sort");
+
+    ts.ucmd()
+        .env("LC_ALL", &locale_fr_utf8)
+        .args(&["-g", "--stable"])
+        .pipe_in("1,9\n1,10\n")
+        .succeeds()
+        .stdout_is("1,10\n1,9\n");
+
+    ts.ucmd()
+        .env("LC_ALL", &locale_fr_utf8)
+        .args(&["-g", "--stable"])
+        .pipe_in("1.9\n1.10\n")
+        .succeeds()
+        .stdout_is("1.10\n1.9\n");
+}
+
 #[test]
 // Test misc numbers ("'a" is not interpreted as literal, trailing text is ignored...)
 fn test_g_misc() {