diff --git a/flake.lock b/flake.lock
index c586b0e..9beec12 100644
--- a/flake.lock
+++ b/flake.lock
@@ -398,11 +398,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1706098335,
-        "narHash": "sha256-r3dWjT8P9/Ah5m5ul4WqIWD8muj5F+/gbCdjiNVBKmU=",
+        "lastModified": 1706718339,
+        "narHash": "sha256-S+S97c/HzkO2A/YsU7ZmNF9w2s7Xk6P8dzmfDdckzLs=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a77ab169a83a4175169d78684ddd2e54486ac651",
+        "rev": "53fbe41cf76b6a685004194e38e889bc8857e8c2",
         "type": "github"
       },
       "original": {
diff --git a/hm/common.nix b/hm/common.nix
index e455af5..91f70c6 100644
--- a/hm/common.nix
+++ b/hm/common.nix
@@ -182,6 +182,7 @@
       jdupes
       duperemove
       compsize
+      btdu
 
       # toolbox
       imagemagick