diff --git a/.config/nvim/init.lua b/.config/nvim/init.lua
index 2514f9e..d39ae7d 100644
--- a/.config/nvim/init.lua
+++ b/.config/nvim/init.lua
@@ -1,2 +1,3 @@
--- bootstrap lazy.nvim, LazyVim and your plugins
+-- early setup: make sure custom clipboard OSC 52 is registered first, options.lua manages default registry
+require("config.clipboard")
 require("config.lazy")
diff --git a/.config/nvim/lua/config/clipboard.lua b/.config/nvim/lua/config/clipboard.lua
new file mode 100644
index 0000000..79b136f
--- /dev/null
+++ b/.config/nvim/lua/config/clipboard.lua
@@ -0,0 +1,22 @@
+-- ~/.config/nvim/lua/config/clipboard.lua
+local function osc52_copy(lines)
+  local data = table.concat(lines, "\n")
+  local b64 = vim.fn.system("base64 -w0", data)
+  vim.fn.chansend(vim.v.stderr, "\x1b]52;c;" .. b64 .. "\x07")
+end
+
+vim.g.clipboard = {
+  name = "OSC 52",
+  copy = {
+    ["+"] = osc52_copy,
+    ["*"] = osc52_copy,
+  },
+  paste = {
+    ["+"] = function()
+      return vim.split(vim.fn.getreg("+"), "\n")
+    end,
+    ["*"] = function()
+      return vim.split(vim.fn.getreg("*"), "\n")
+    end,
+  },
+}
diff --git a/.config/nvim/lua/config/options.lua b/.config/nvim/lua/config/options.lua
index 3ea1454..77a0560 100644
--- a/.config/nvim/lua/config/options.lua
+++ b/.config/nvim/lua/config/options.lua
@@ -1,3 +1,4 @@
 -- Options are automatically loaded before lazy.nvim startup
 -- Default options that are always set: https://github.com/LazyVim/LazyVim/blob/main/lua/lazyvim/config/options.lua
 -- Add any additional options here
+vim.opt.clipboard = "unnamedplus"
diff --git a/.tmux.conf b/.tmux.conf
index 2abe6bd..6e35dc6 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -1,12 +1,15 @@
 set -g default-command /usr/bin/zsh
 
-set -g default-terminal "xterm-256color"
+set -g default-terminal "tmux-256color"
 
 # disable mouse mode (to use selection mode from current terminal)
 set-option -g mouse off
 
 # copy mode
 setw -g mode-keys vi
+set -g set-clipboard on
+set -g allow-passthrough on
+
 bind-key -T copy-mode-vi 'v' send -X begin-selection
 bind-key -T copy-mode-vi 'y' send -X copy-selection-and-cancel