diff --git a/new.sh b/new.sh
new file mode 100644
index 0000000..5853627
--- /dev/null
+++ b/new.sh
@@ -0,0 +1,43 @@
+#!/bin/sh
+
+repo_tags=$(curl 'https://api.github.com/repos/zen-browser/desktop/tags' -s)
+
+twilight_tag=$(echo "$repo_tags" | jq -r '.[]|select(.name|test("twilight"))')
+beta_tag=$(echo "$repo_tags" | jq -r '(map(select(.name | test("-b.")))) | first')
+
+try_to_update() {
+    name=$1
+    arch=$2
+    target_tag_meta=$3
+
+    meta=$(jq ".[\"$name\"][\"$arch-linux\"]" <sources.json)
+
+    local_sha1=$(echo "$meta" | jq -r '.sha1')
+    remote_sha1=$(echo "$target_tag_meta" | jq -r '.commit.sha')
+
+    echo "Checking $name version @ $arch... local=$local_sha1 remote=$remote_sha1"
+
+    if [ "$local_sha1" = "$remote_sha1" ]; then
+        echo "Local $name version is up to date"
+    else
+        echo "Local $name version is outdated"
+
+        version=$(echo "$target_tag_meta" | jq -r '.name')
+        download_url="https://github.com/zen-browser/desktop/releases/download/$version/zen.linux-$arch.tar.bz2"
+
+        prefetch_output=$(nix store prefetch-file --hash-type sha256 --json "$download_url")
+        sha256=$(echo "$prefetch_output" | jq -r '.hash')
+
+        jq ".[\"$name\"][\"$arch-linux\"] = {\"name\":\"$name\",\"version\":\"$version\",\"sha1\":\"$remote_sha1\",\"url\":\"$download_url\",\"sha256\":\"$sha256\"}" <sources.json >sources.json.tmp
+        mv sources.json.tmp sources.json
+
+        echo "$name was updated to $version"
+    fi
+}
+
+set -e
+
+try_to_update "beta" "x86_64" "$beta_tag"
+try_to_update "beta" "aarch64" "$beta_tag"
+try_to_update "twilight" "x86_64" "$twilight_tag"
+try_to_update "twilight" "aarch64" "$twilight_tag"