diff --git a/hosts/darwin/home-default.nix b/hosts/darwin/home-default.nix
index c36540f..2c0974f 100644
--- a/hosts/darwin/home-default.nix
+++ b/hosts/darwin/home-default.nix
@@ -170,6 +170,7 @@
     zoxide
     delta
     fastfetch
+    coreutils      # GNU core utilities (base64, etc.)
 
     # macOS-specific GUI applications
     maccy          # Clipboard manager (macOS-only)
diff --git a/hosts/nixos/home-default.nix b/hosts/nixos/home-default.nix
index 4d05aa2..7546650 100644
--- a/hosts/nixos/home-default.nix
+++ b/hosts/nixos/home-default.nix
@@ -54,6 +54,7 @@
     zoxide
     delta
     fastfetch
+    coreutils      # GNU core utilities (base64, etc.)
 
     # Development and build tools
     python312