diff --git a/update.fish b/update.fish
new file mode 100755
index 000000000000..195e823d9c5b
--- /dev/null
+++ b/update.fish
@@ -0,0 +1,9 @@
+#!/usr/bin/fish
+
+set -l pkgver (curl -sLf "https://product-details.mozilla.org/1.0/firefox_versions.json" | jq -r ".FIREFOX_DEVEDITION")
+sed -i -r "/^pkgver/{s/=.+\$/=$pkgver/}" PKGBUILD
+if not git diff --quiet
+    makepkg --printsrcinfo > .SRCINFO
+    git add PKGBUILD .SRCINFO
+    git commit -m "bump: $_pkgver"
+end
\ No newline at end of file