diff --git a/.pre-commit-entry.sh b/.pre-commit-entry.sh
index 3577577..add8ebd 100755
--- a/.pre-commit-entry.sh
+++ b/.pre-commit-entry.sh
@@ -1,3 +1,26 @@
 #! /usr/bin/env sh
 
-nix run github:kamadorueda/alejandra -- -q "$@"
+set -eux
+
+if ! command -v nix-build; then
+  echo 'ERROR: this pre-commit hook requires "nix-build" to be installed first'
+  exit 1
+fi
+
+if !command -v nix-instantiate; then
+  echo 'ERROR: this pre-commit hook requires "nix-instantiate" to be installed first'
+  exit 1
+fi
+
+echo INFO: computing current system
+system="$(nix-instantiate --eval --expr builtins.currentSystem)"
+
+echo INFO: building Alejandra
+
+nix-build \
+  --attr ${system} \
+  --out-link result-alejandra \
+  https://github.com/kamadorueda/alejandra/tarball/1.2.0
+
+echo INFO: running Alejandra:
+result-alejandra/bin/alejandra -- -q "${@}"
diff --git a/README.md b/README.md
index 988f5b6..06b659a 100644
--- a/README.md
+++ b/README.md
@@ -269,8 +269,7 @@ Thank you ❤️
 
 - [Kevin Amado](https://github.com/kamadorueda) ~
   [Email](mailto:kamadorueda@gmail.com),
-  [Patreon](https://www.patreon.com/kamadorueda),
-  @kamadorueda:[matrix.org](https://matrix.org/).
+  [Patreon](https://www.patreon.com/kamadorueda).
 - [Thomas Bereknyei](https://github.com/tomberek).
 - [Piegames](https://github.com/piegamesde).
 - [Joachim Ernst](https://github.com/0x4A6F).
@@ -282,6 +281,7 @@ Thank you ❤️
 - [Rehno Lindeque](https://github.com/rehno-lindeque).
 - [Jörg Thalheim](https://github.com/Mic92).
 - [Vincent Ambo](https://github.com/tazjin).
+- [Loïc Reynier](https://github.com/loicreynier).
 - [Mr Hedgehog](https://github.com/ModdedGamers).
 - [Tristan Maat](https://github.com/TLATER).
 - [Norbert Melzer](https://github.com/NobbZ).