diff --git a/hosts/darwin/home-default.nix b/hosts/darwin/home-default.nix
index 63ae791..6c1dd76 100644
--- a/hosts/darwin/home-default.nix
+++ b/hosts/darwin/home-default.nix
@@ -174,6 +174,7 @@
     unzip
     duti           # Set default applications for file types (macOS)
     ffmpeg
+    pdftk
 
     # Development and build tools
     python312
diff --git a/hosts/nixos/home-default.nix b/hosts/nixos/home-default.nix
index c73510c..ebbff8f 100644
--- a/hosts/nixos/home-default.nix
+++ b/hosts/nixos/home-default.nix
@@ -55,6 +55,7 @@
     coreutils      # GNU core utilities (base64, etc.)
     bzip2
     ffmpeg
+    pdftk
 
     # Development and build tools
     python312
diff --git a/modules/homebrew.nix b/modules/homebrew.nix
index 6ef80e9..a872dcf 100644
--- a/modules/homebrew.nix
+++ b/modules/homebrew.nix
@@ -46,6 +46,7 @@
       "drawio"
       "clash-verge-rev"
       "the-unarchiver"
+      "musicbrainz-picard"
     ];
     taps = [
       "nikitabobko/tap"