diff --git a/system_files/desktop/shared/usr/etc/ublue-update.d/user/20-brew-update.sh b/system_files/desktop/shared/usr/etc/ublue-update.d/user/20-brew-update.sh
deleted file mode 100755
index c8481ce8..00000000
--- a/system_files/desktop/shared/usr/etc/ublue-update.d/user/20-brew-update.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-#!/usr/bin/bash
-
-if command -v brew; then
-	brew update
-	brew upgrade
-fi
\ No newline at end of file
diff --git a/system_files/desktop/shared/usr/etc/ublue-update.d/user/99-bazzite-arch-user-update.sh b/system_files/desktop/shared/usr/etc/ublue-update.d/user/99-bazzite-arch-user-update.sh
index 757bdbbd..39be5438 100755
--- a/system_files/desktop/shared/usr/etc/ublue-update.d/user/99-bazzite-arch-user-update.sh
+++ b/system_files/desktop/shared/usr/etc/ublue-update.d/user/99-bazzite-arch-user-update.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 
 if [[ $(podman ps -a --no-trunc --format {{.Names}} | grep -E '(^|\s)bazzite-arch($|\s)') ]]; then
 	unset SUDO_USER # avoid distrobox sudo checks
diff --git a/system_files/desktop/silverblue/usr/etc/ublue-update.d/user/80-adwaita-for-steam-user-update.sh b/system_files/desktop/silverblue/usr/etc/ublue-update.d/user/80-adwaita-for-steam-user-update.sh
index 21886ec3..f60ad699 100755
--- a/system_files/desktop/silverblue/usr/etc/ublue-update.d/user/80-adwaita-for-steam-user-update.sh
+++ b/system_files/desktop/silverblue/usr/etc/ublue-update.d/user/80-adwaita-for-steam-user-update.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 shopt -s nullglob
 
 if [ -d "$HOME/homebrew/themes/Adwaita-for-Steam" ]; then
diff --git a/system_files/desktop/silverblue/usr/etc/ublue-update.d/user/90-mozilla-gnome-themes-user-update.sh b/system_files/desktop/silverblue/usr/etc/ublue-update.d/user/90-mozilla-gnome-themes-user-update.sh
index f35500b5..06a9e3d7 100755
--- a/system_files/desktop/silverblue/usr/etc/ublue-update.d/user/90-mozilla-gnome-themes-user-update.sh
+++ b/system_files/desktop/silverblue/usr/etc/ublue-update.d/user/90-mozilla-gnome-themes-user-update.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 shopt -s nullglob
 
 # Flatpak Firefox