diff --git a/system_files/deck/shared/etc/environment b/system_files/deck/shared/etc/environment
index 313e8afe..d28b52a0 100644
--- a/system_files/deck/shared/etc/environment
+++ b/system_files/deck/shared/etc/environment
@@ -1,2 +1,5 @@
 # VIM is more usable on deck due to control scheme
 EDITOR=/usr/bin/vim
+
+# Disable Brew auto-update
+HOMEBREW_NO_AUTO_UPDATE=1
diff --git a/system_files/deck/silverblue/etc/environment b/system_files/deck/silverblue/etc/environment
index 409edd83..1ef2b83e 100644
--- a/system_files/deck/silverblue/etc/environment
+++ b/system_files/deck/silverblue/etc/environment
@@ -3,3 +3,6 @@ MUTTER_DEBUG_KMS_THREAD_TYPE=user
 
 # VIM is more usable on deck due to control scheme
 EDITOR=/usr/bin/vim
+
+# Disable Brew auto-update
+HOMEBREW_NO_AUTO_UPDATE=1
diff --git a/system_files/desktop/silverblue/etc/environment b/system_files/desktop/silverblue/etc/environment
index 52b121d9..5ecc6ff1 100644
--- a/system_files/desktop/silverblue/etc/environment
+++ b/system_files/desktop/silverblue/etc/environment
@@ -1,2 +1,5 @@
 # https://gitlab.gnome.org/GNOME/mutter/-/issues/3037
 MUTTER_DEBUG_KMS_THREAD_TYPE=user
+
+# Disable Brew auto-update
+HOMEBREW_NO_AUTO_UPDATE=1