diff --git a/pkgs/by-name/fi/fish/1d78c8bd4295262a3118f478e6b3a7c7536fa282.patch b/pkgs/by-name/fi/fish/1d78c8bd4295262a3118f478e6b3a7c7536fa282.patch
deleted file mode 100644
index 873b112d864e..000000000000
--- a/pkgs/by-name/fi/fish/1d78c8bd4295262a3118f478e6b3a7c7536fa282.patch
+++ /dev/null
@@ -1,74 +0,0 @@
-From 1d78c8bd4295262a3118f478e6b3a7c7536fa282 Mon Sep 17 00:00:00 2001
-From: Johannes Altmanninger <aclopte@gmail.com>
-Date: Wed, 19 Mar 2025 09:39:04 +0100
-Subject: [PATCH] Fix concurrent setlocale() in string escape tests
-
-In our C++ implementation, these tests were run serially.  As pointed out in
-https://github.com/fish-shell/fish-shell/issues/11254#issuecomment-2735623229
-we run them in parallel now, which means that one test could be changing
-the global locale used by another.
-
-In theory this could be fine because all tests are setting setting the
-global locale to the same thing but the existence of a lock suggests that
-setlocale() is not guaranteed to be atomic, so it's possible that another
-thread uses a temporarily-invalid locale.
-
-Fixes #11254
----
- src/tests/string_escape.rs | 14 ++++++++------
- 1 file changed, 8 insertions(+), 6 deletions(-)
-
-diff --git a/src/tests/string_escape.rs b/src/tests/string_escape.rs
-index ba8ee7534ebf..4428d679cd35 100644
---- a/src/tests/string_escape.rs
-+++ b/src/tests/string_escape.rs
-@@ -1,3 +1,5 @@
-+use std::sync::MutexGuard;
-+
- use crate::common::{
-     escape_string, str2wcstring, unescape_string, wcs2string, EscapeFlags, EscapeStringStyle,
-     UnescapeStringStyle, ENCODE_DIRECT_BASE, ENCODE_DIRECT_END,
-@@ -10,21 +12,21 @@ use rand::{Rng, RngCore};
- 
- /// wcs2string is locale-dependent, so ensure we have a multibyte locale
- /// before using it in a test.
--fn setlocale() {
--    let _guard = LOCALE_LOCK.lock().unwrap();
-+fn setlocale() -> MutexGuard<'static, ()> {
-+    let guard = LOCALE_LOCK.lock().unwrap();
- 
-     #[rustfmt::skip]
-     const UTF8_LOCALES: &[&str] = &[
-         "C.UTF-8", "en_US.UTF-8", "en_GB.UTF-8", "de_DE.UTF-8", "C.utf8", "UTF-8",
-     ];
-     if crate::libc::MB_CUR_MAX() > 1 {
--        return;
-+        return guard;
-     }
-     for locale in UTF8_LOCALES {
-         let locale = std::ffi::CString::new(locale.to_owned()).unwrap();
-         unsafe { libc::setlocale(libc::LC_CTYPE, locale.as_ptr()) };
-         if crate::libc::MB_CUR_MAX() > 1 {
--            return;
-+            return guard;
-         }
-     }
-     panic!("No UTF-8 locale found");
-@@ -100,7 +102,7 @@ fn test_escape_var() {
- }
- 
- fn escape_test(escape_style: EscapeStringStyle, unescape_style: UnescapeStringStyle) {
--    setlocale();
-+    let _locale_guard = setlocale();
-     let seed: u128 = 92348567983274852905629743984572;
-     let mut rng = get_seeded_rng(seed);
- 
-@@ -174,7 +176,7 @@ fn str2hex(input: &[u8]) -> String {
- /// string comes back through double conversion.
- #[test]
- fn test_convert() {
--    setlocale();
-+    let _locale_guard = setlocale();
-     let seed = get_rng_seed();
-     let mut rng = get_seeded_rng(seed);
-     let mut origin = Vec::new();
diff --git a/pkgs/by-name/fi/fish/package.nix b/pkgs/by-name/fi/fish/package.nix
index e61a9134f602..1b4c0b375201 100644
--- a/pkgs/by-name/fi/fish/package.nix
+++ b/pkgs/by-name/fi/fish/package.nix
@@ -152,13 +152,13 @@ let
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = "fish";
-  version = "4.0.1";
+  version = "4.0.2";
 
   src = fetchFromGitHub {
     owner = "fish-shell";
     repo = "fish-shell";
     tag = finalAttrs.version;
-    hash = "sha256-Mj4v2ubYr4ufs7aU/1AdY239byiCJHKXam64af/VO3U=";
+    hash = "sha256-UpoZPipXZbzLWCOXzDjfyTDrsKyXGbh3Rkwj5IeWeY4=";
   };
 
   env = {
@@ -169,7 +169,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   cargoDeps = rustPlatform.fetchCargoVendor {
     inherit (finalAttrs) src patches;
-    hash = "sha256-4kqBrpeneCpF0WohP1ZArKrV3duHAE01XA5+GT9f56w=";
+    hash = "sha256-FkJB33vVVz7Kh23kfmjQDn61X2VkKLG9mUt8f3TrCHg=";
   };
 
   patches = [
@@ -188,10 +188,6 @@ stdenv.mkDerivation (finalAttrs: {
     # * <https://github.com/LnL7/nix-darwin/issues/122>
     # * <https://github.com/fish-shell/fish-shell/issues/7142>
     ./nix-darwin-path.patch
-
-    # remove 4.0.2
-    # https://github.com/fish-shell/fish-shell/issues/11254
-    ./1d78c8bd4295262a3118f478e6b3a7c7536fa282.patch
   ];
 
   # Fix FHS paths in tests