diff --git a/pkgs/development/beam-modules/elixir-ls/default.nix b/pkgs/development/beam-modules/elixir-ls/default.nix
index dd7ea4cacf74..885b6eec49af 100644
--- a/pkgs/development/beam-modules/elixir-ls/default.nix
+++ b/pkgs/development/beam-modules/elixir-ls/default.nix
@@ -1,16 +1,15 @@
-{ lib, elixir, fetchFromGitHub, fetchMixDeps, mixRelease }:
+{ lib, elixir, fetchFromGitHub, fetchMixDeps, mixRelease, nix-update-script }:
 # Based on the work of Hauleth
 # None of this would have happened without him
 
 let
   pname = "elixir-ls";
-  pinData = lib.importJSON ./pin.json;
-  version = pinData.version;
+  version = "0.14.6";
   src = fetchFromGitHub {
     owner = "elixir-lsp";
     repo = "elixir-ls";
     rev = "v${version}";
-    sha256 = pinData.sha256;
+    hash = "sha256-O977DZLWPyLafIaOTPZKI4MOtK9E9TDProf2xyk05aI";
     fetchSubmodules = true;
   };
 in
@@ -20,7 +19,7 @@ mixRelease  {
   mixFodDeps = fetchMixDeps {
     pname = "mix-deps-${pname}";
     inherit src version elixir;
-    sha256 = pinData.depsSha256;
+    sha256 = "sha256-jF1Plkz1D85aWkiNgeBlJmHndhr7us+8+m/gMkXHvDw=";
   };
 
   # elixir-ls is an umbrella app
@@ -71,5 +70,5 @@ mixRelease  {
     platforms = platforms.unix;
     maintainers = teams.beam.members;
   };
-  passthru.updateScript = ./update.sh;
+  passthru.updateScript = nix-update-script { };
 }
diff --git a/pkgs/development/beam-modules/elixir-ls/pin.json b/pkgs/development/beam-modules/elixir-ls/pin.json
deleted file mode 100644
index e2eb21a57096..000000000000
--- a/pkgs/development/beam-modules/elixir-ls/pin.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "version": "0.14.5",
-  "sha256": "sha256-F0c1vyeie8sf11SHfDKb8v1DZ5No3Rr3PPj3jMg0veg=",
-  "depsSha256": "sha256-/lKZ9Ns32A/elJTez72mH2tZ7ujwEX9p4FIKHpfGq78="
-}
diff --git a/pkgs/development/beam-modules/elixir-ls/update.sh b/pkgs/development/beam-modules/elixir-ls/update.sh
deleted file mode 100755
index be85b4c6d642..000000000000
--- a/pkgs/development/beam-modules/elixir-ls/update.sh
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/usr/bin/env nix-shell
-#! nix-shell -i oil -p jq sd nix-prefetch-github ripgrep
-
-# TODO set to `verbose` or `extdebug` once implemented in oil
-set -x
-
-const directory = $(dirname $0 | xargs realpath)
-const owner = "elixir-lsp"
-const repo = "elixir-ls"
-const latest_rev = $(curl -q https://api.github.com/repos/${owner}/${repo}/releases/latest | \
-  jq -r '.tag_name')
-const latest_version = $(echo $latest_rev | sd 'v' '')
-const current_version = $(jq -r '.version' $directory/pin.json)
-if ("$latest_version" === "$current_version") {
-  echo "elixir-ls is already up-to-date"
-  return 0
-} else {
-  const tarball_meta = $(nix-prefetch-github $owner $repo --rev "$latest_rev")
-  const tarball_hash = "sha256-$(echo $tarball_meta | jq -r '.sha256')"
-  const sha256s = $(rg '"sha256-.+"' $directory/default.nix | sd '.+"(.+)";' '$1' )
-
-  jq ".version = \"$latest_version\" | \
-      .\"sha256\" = \"$tarball_hash\" | \
-      .\"depsSha256\" = \"\"" $directory/pin.json | sponge $directory/pin.json
-
-  const new_mix_hash = $(nix-build -A elixir-ls.mixFodDeps 2>&1 | \
-    tail -n 1 | \
-    sd '\s+got:\s+' '')
-
-  jq ".depsSha256 = \"$new_mix_hash\"" $directory/pin.json | sponge $directory/pin.json
-}