diff --git a/pkgs/by-name/pr/protonmail-desktop/update.sh b/pkgs/by-name/pr/protonmail-desktop/update.sh
index 4b1a10f17738..bd197203b8bc 100755
--- a/pkgs/by-name/pr/protonmail-desktop/update.sh
+++ b/pkgs/by-name/pr/protonmail-desktop/update.sh
@@ -5,25 +5,7 @@
 
 set -eu -o pipefail
 
-latestVersion=$(curl https://api.github.com/repos/ProtonMail/inbox-desktop/releases/latest | jq -r '.tag_name')
-
-declare -A platforms
-platforms[x86_64-linux]="amd64"
-platforms[x86_64-darwin]="universal"
-
-for platform in "${!platforms[@]}"
-do
-  arch=${platforms[$platform]}
-  os=$(echo "$platform" | cut -d "-" -f2)
-
-  if [[ "$os" == "linux" ]]; then
-    downloadUrl="https://github.com/ProtonMail/inbox-desktop/releases/download/${latestVersion}/proton-mail_${latestVersion}_${arch}.deb"
-  else
-    downloadUrl="https://github.com/ProtonMail/inbox-desktop/releases/download/${latestVersion}/Proton.Mail-${os}-${arch}-${latestVersion}.zip"
-  fi
-  echo "$downloadUrl"
-
-  latestSha=$(nix store prefetch-file "$downloadUrl" --json | jq -r '.hash')
-
-  update-source-version "protonmail-desktop" "$latestVersion" "$latestSha" --system="$platform" --ignore-same-version --file=./pkgs/by-name/pr/protonmail-desktop/package.nix
-done
+latestVersion=$(curl https://proton.me/download/mail/linux/version.json | jq -r 'first(.Releases[])|.Version')
+downloadUrl="https://proton.me/download/mail/linux/${latestVersion}/ProtonMail-desktop-beta.deb"
+latestSha=$(nix store prefetch-file "$downloadUrl" --json | jq -r '.hash')
+update-source-version "protonmail-desktop" "$latestVersion" "$latestSha" --ignore-same-version --file=./pkgs/by-name/pr/protonmail-desktop/package.nix