diff --git a/flake.lock b/flake.lock
index 76abd15..69a13e8 100644
--- a/flake.lock
+++ b/flake.lock
@@ -3,16 +3,16 @@
     "brew-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1711985568,
-        "narHash": "sha256-VLeP9HGQwfkiuHDp648PXGCkogr3ktYm0q9Yj+i0lGQ=",
+        "lastModified": 1716195221,
+        "narHash": "sha256-u+zjC7efKD3gBD9aKXsUTEhRhBQhYlP+KPFp1QbsgOo=",
         "owner": "Homebrew",
         "repo": "brew",
-        "rev": "bd1155be8f50998429a795c15a69c8fe75250510",
+        "rev": "e0bc557e7b991cb23583679e1cf1c8a92b793aeb",
         "type": "github"
       },
       "original": {
         "owner": "Homebrew",
-        "ref": "4.2.16",
+        "ref": "4.3.1",
         "repo": "brew",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 70b15dc..cc66f19 100644
--- a/flake.nix
+++ b/flake.nix
@@ -6,7 +6,7 @@
     nix-darwin.url = "github:LnL7/nix-darwin";
     flake-utils.url = "github:numtide/flake-utils";
     brew-src = {
-      url = "github:Homebrew/brew/4.2.16";
+      url = "github:Homebrew/brew/4.3.1";
       flake = false;
     };
   };
diff --git a/modules/brew.tail.sh b/modules/brew.tail.sh
index 6537f0e..3b8f492 100644
--- a/modules/brew.tail.sh
+++ b/modules/brew.tail.sh
@@ -56,6 +56,7 @@ MANPAGE_VARS=(
   BAT_CONFIG_PATH
   BAT_THEME
   BROWSER
+  BUNDLE_USER_CACHE
   DISPLAY
   EDITOR
   NO_COLOR