diff --git a/contrib/guix/guix-attest b/contrib/guix/guix-attest
index 3d70731cbdb..06925ffbede 100755
--- a/contrib/guix/guix-attest
+++ b/contrib/guix/guix-attest
@@ -1,6 +1,9 @@
 #!/usr/bin/env bash
-export LC_ALL=C
-set -e -o pipefail
+# Copyright (c) The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or https://opensource.org/license/mit.
+export LC_ALL=C.UTF-8
+set -o errexit -o pipefail
 
 # Source the common prelude, which:
 #   1. Checks if we're at the top directory of the Bitcoin Core repository
diff --git a/contrib/guix/guix-build b/contrib/guix/guix-build
index 9679e24ba85..9afe00a067d 100755
--- a/contrib/guix/guix-build
+++ b/contrib/guix/guix-build
@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
-export LC_ALL=C
+# Copyright (c) The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or https://opensource.org/license/mit.
+export LC_ALL=C.UTF-8
 set -o errexit -o pipefail
 
 # Source the common prelude, which:
diff --git a/contrib/guix/guix-clean b/contrib/guix/guix-clean
index 32258cd7477..a72a26445a8 100755
--- a/contrib/guix/guix-clean
+++ b/contrib/guix/guix-clean
@@ -1,6 +1,9 @@
 #!/usr/bin/env bash
-export LC_ALL=C
-set -e -o pipefail
+# Copyright (c) The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or https://opensource.org/license/mit.
+export LC_ALL=C.UTF-8
+set -o errexit -o pipefail
 
 # Source the common prelude, which:
 #   1. Checks if we're at the top directory of the Bitcoin Core repository
diff --git a/contrib/guix/guix-codesign b/contrib/guix/guix-codesign
index 8cc6993b824..179041c140a 100755
--- a/contrib/guix/guix-codesign
+++ b/contrib/guix/guix-codesign
@@ -1,6 +1,9 @@
 #!/usr/bin/env bash
-export LC_ALL=C
-set -e -o pipefail
+# Copyright (c) The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or https://opensource.org/license/mit.
+export LC_ALL=C.UTF-8
+set -o errexit -o pipefail
 
 # Source the common prelude, which:
 #   1. Checks if we're at the top directory of the Bitcoin Core repository
diff --git a/contrib/guix/guix-verify b/contrib/guix/guix-verify
index 02ae022741b..82e740036ba 100755
--- a/contrib/guix/guix-verify
+++ b/contrib/guix/guix-verify
@@ -1,6 +1,9 @@
 #!/usr/bin/env bash
-export LC_ALL=C
-set -e -o pipefail
+# Copyright (c) The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or https://opensource.org/license/mit.
+export LC_ALL=C.UTF-8
+set -o errexit -o pipefail
 
 # Source the common prelude, which:
 #   1. Checks if we're at the top directory of the Bitcoin Core repository
diff --git a/contrib/guix/libexec/build_linux.sh b/contrib/guix/libexec/build_linux.sh
index 15dc77ab138..492890ecc1c 100755
--- a/contrib/guix/libexec/build_linux.sh
+++ b/contrib/guix/libexec/build_linux.sh
@@ -2,7 +2,7 @@
 # Copyright (c) The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
-export LC_ALL=C
+export LC_ALL=C.UTF-8
 set -o errexit -o pipefail
 
 # shellcheck source=setup.sh
diff --git a/contrib/guix/libexec/build_linux_gui.sh b/contrib/guix/libexec/build_linux_gui.sh
index d14dda00293..218bc0a952c 100755
--- a/contrib/guix/libexec/build_linux_gui.sh
+++ b/contrib/guix/libexec/build_linux_gui.sh
@@ -2,7 +2,7 @@
 # Copyright (c) The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
-export LC_ALL=C
+export LC_ALL=C.UTF-8
 set -o errexit -o pipefail
 
 # shellcheck source=setup.sh
diff --git a/contrib/guix/libexec/build_macos.sh b/contrib/guix/libexec/build_macos.sh
index f8e42e1bad8..b8dc2500994 100755
--- a/contrib/guix/libexec/build_macos.sh
+++ b/contrib/guix/libexec/build_macos.sh
@@ -2,7 +2,7 @@
 # Copyright (c) The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
-export LC_ALL=C
+export LC_ALL=C.UTF-8
 set -o errexit -o pipefail
 
 # shellcheck source=setup.sh
diff --git a/contrib/guix/libexec/build_macos_gui.sh b/contrib/guix/libexec/build_macos_gui.sh
index 47ffe6c821d..3db1cfac643 100755
--- a/contrib/guix/libexec/build_macos_gui.sh
+++ b/contrib/guix/libexec/build_macos_gui.sh
@@ -2,7 +2,7 @@
 # Copyright (c) The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
-export LC_ALL=C
+export LC_ALL=C.UTF-8
 set -o errexit -o pipefail
 
 # shellcheck source=setup.sh
diff --git a/contrib/guix/libexec/build_win.sh b/contrib/guix/libexec/build_win.sh
index fc3b46aa38e..ce1f7fd4d03 100755
--- a/contrib/guix/libexec/build_win.sh
+++ b/contrib/guix/libexec/build_win.sh
@@ -2,7 +2,7 @@
 # Copyright (c) The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
-export LC_ALL=C
+export LC_ALL=C.UTF-8
 set -o errexit -o pipefail
 
 # shellcheck source=setup.sh
diff --git a/contrib/guix/libexec/build_win_gui.sh b/contrib/guix/libexec/build_win_gui.sh
index aba93eb0654..94f21166392 100755
--- a/contrib/guix/libexec/build_win_gui.sh
+++ b/contrib/guix/libexec/build_win_gui.sh
@@ -2,7 +2,7 @@
 # Copyright (c) The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
-export LC_ALL=C
+export LC_ALL=C.UTF-8
 set -o errexit -o pipefail
 
 # shellcheck source=setup.sh
diff --git a/contrib/guix/libexec/codesign.sh b/contrib/guix/libexec/codesign.sh
index 9b7f085d3ab..21f4c110661 100755
--- a/contrib/guix/libexec/codesign.sh
+++ b/contrib/guix/libexec/codesign.sh
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
-# Copyright (c) 2021-present The Bitcoin Core developers
+# Copyright (c) The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
-# file COPYING or http://www.opensource.org/licenses/mit-license.php.
-export LC_ALL=C
-set -e -o pipefail
+# file COPYING or https://opensource.org/license/mit.
+export LC_ALL=C.UTF-8
+set -o errexit -o pipefail
 
 # Environment variables for determinism
 export TAR_OPTIONS="--owner=0 --group=0 --numeric-owner --mtime='@${SOURCE_DATE_EPOCH}' --sort=name"
diff --git a/contrib/guix/libexec/package.sh b/contrib/guix/libexec/package.sh
index fd080ccf293..05f5e61f744 100755
--- a/contrib/guix/libexec/package.sh
+++ b/contrib/guix/libexec/package.sh
@@ -2,8 +2,8 @@
 # Copyright (c) The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
-export LC_ALL=C
-set -e -o pipefail
+export LC_ALL=C.UTF-8
+set -o errexit -o pipefail
 
 (
     cd "$DISTSRC"
diff --git a/contrib/guix/libexec/prelude.bash b/contrib/guix/libexec/prelude.bash
index 994f6c5cdf7..2fe5c73867e 100644
--- a/contrib/guix/libexec/prelude.bash
+++ b/contrib/guix/libexec/prelude.bash
@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
-export LC_ALL=C
+# Copyright (c) The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or https://opensource.org/license/mit.
+export LC_ALL=C.UTF-8
 set -o errexit -o pipefail
 
 source contrib/shell/realpath.bash
diff --git a/contrib/guix/libexec/setup.sh b/contrib/guix/libexec/setup.sh
index e8d70d590b3..c6858c9862d 100755
--- a/contrib/guix/libexec/setup.sh
+++ b/contrib/guix/libexec/setup.sh
@@ -2,7 +2,7 @@
 # Copyright (c) The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
-export LC_ALL=C
+export LC_ALL=C.UTF-8
 set -o errexit -o pipefail
 
 # Environment variables for determinism
diff --git a/contrib/guix/manifest_build.scm b/contrib/guix/manifest_build.scm
index 3d9082438d0..6646a0523fe 100644
--- a/contrib/guix/manifest_build.scm
+++ b/contrib/guix/manifest_build.scm
@@ -209,7 +209,7 @@ chain for " target " development."))
 (define-public glibc-2.31
   (let ((commit "28eb5caf895ced5d895cb02757e109004a2d33e5"))
   (package
-    (inherit glibc) ;; 2.39
+    (inherit glibc) ;; 2.41
     (version "2.31")
     (source (origin
               (method git-fetch)