diff --git a/pkgs/by-name/li/lidarr/update.sh b/pkgs/by-name/li/lidarr/update.sh
index a0712f299113..c8cbca5bc089 100755
--- a/pkgs/by-name/li/lidarr/update.sh
+++ b/pkgs/by-name/li/lidarr/update.sh
@@ -1,43 +1,35 @@
 #!/usr/bin/env nix-shell
 #!nix-shell -i bash -p curl gnused nix-prefetch jq
 
-set -e
+set -euo pipefail
 
-dirname="$(dirname "$0")"
+dirname="$(dirname "$(readlink -f "$0")")"
 
-updateHash()
-{
-    version=$1
-    arch=$2
-    os=$3
-
-    hashKey="${arch}-${os}_hash"
+updateHash() {
+    local version arch os
+    version="$1"
+    arch="$2"
+    os="$3"
 
+    local url hash sriHash
     url="https://github.com/Lidarr/Lidarr/releases/download/v$version/Lidarr.master.$version.$os-core-$arch.tar.gz"
-    hash=$(nix-prefetch-url --type sha256 $url)
-    sriHash="$(nix --extra-experimental-features nix-command hash to-sri --type sha256 $hash)"
+    hash="$(nix-prefetch-url --type sha256 "$url")"
+    sriHash="$(nix --extra-experimental-features nix-command hash convert --to sri --hash-algo sha256 "$hash")"
 
-    sed -i "s|$hashKey = \"[a-zA-Z0-9\/+-=]*\";|$hashKey = \"$sriHash\";|g" "$dirname/default.nix"
+    local hashKey="${arch}-${os}_hash"
+    sed -i "s|$hashKey = \"[a-zA-Z0-9\/+-=]*\";|$hashKey = \"$sriHash\";|g" "$dirname/package.nix"
 }
 
-updateVersion()
-{
-    sed -i "s/version = \"[0-9.]*\";/version = \"$1\";/g" "$dirname/default.nix"
+updateVersion() {
+    sed -i "s/version = \"[0-9.]*\";/version = \"$1\";/g" "$dirname/package.nix"
 }
 
-currentVersion=$(cd $dirname && nix eval --raw -f ../../.. lidarr.version)
-
 latestTag=$(curl https://api.github.com/repos/Lidarr/Lidarr/releases/latest | jq -r ".tag_name")
-latestVersion="$(expr $latestTag : 'v\(.*\)')"
+latestVersion="$(expr "$latestTag" : 'v\(.*\)')"
 
-if [[ "$currentVersion" == "$latestVersion" ]]; then
-    echo "Lidarr is up-to-date: ${currentVersion}"
-    exit 0
-fi
+updateVersion "$latestVersion"
 
-updateVersion $latestVersion
-
-updateHash $latestVersion x64 linux
-updateHash $latestVersion arm64 linux
-updateHash $latestVersion x64 osx
-updateHash $latestVersion arm64 osx
+updateHash "$latestVersion" x64 linux
+updateHash "$latestVersion" arm64 linux
+updateHash "$latestVersion" x64 osx
+updateHash "$latestVersion" arm64 osx