diff --git a/upgrade.sh b/upgrade.sh
new file mode 100755
index 0000000..a3f71b0
--- /dev/null
+++ b/upgrade.sh
@@ -0,0 +1,64 @@
+#!/bin/zsh
+
+LOCK_ROOT=".lock"
+
+# Define a function to create key-value pairs
+create_mapping() {
+    local input="$1"
+    local output="$2"
+    echo "$input|$output"
+}
+
+# Define an array of key-value pairs
+mappings=(
+    $(create_mapping "nvim" "$HOME/.config")
+    $(create_mapping "kitty" "$HOME/.config")
+    $(create_mapping ".zshrc" "$HOME")
+    $(create_mapping "yabai" "$HOME/.config")
+    $(create_mapping "yabai_launcher" "/private/etc/sudoers.d")
+)
+
+# Enable the NULL_GLOB option to handle cases where no subdirectories exist
+setopt NULL_GLOB
+
+# Figure out the name for the lock-dir.
+mkdir -p "$LOCK_ROOT"
+latest_lock=0
+for subdir in "$LOCK_ROOT"/*/; do
+    subdir_name=${subdir%"${subdir##*[!/]}"}
+    subdir_name=${subdir_name##*/}
+    
+    if [[ $subdir_name =~ ^[0-9]+$ ]] && ((subdir_name > highest_num)); then
+        latest_lock=$subdir_name
+    fi
+done
+((latest_lock++))
+
+lock_dir="$LOCK_ROOT"/"$latest_lock"
+# Create a lock dir for our current configs.
+
+mkdir -p "$lock_dir"
+
+# Iterate through the array of key-value pairs
+for mapping in "${mappings[@]}"; do
+    current_mapping=("${(@s:|:)mapping}")
+
+    src="${current_mapping[1]}"
+    dest="${current_mapping[2]}"
+    lock_dest="$lock_dir/$(basename "$src")"
+
+    # Check if destination directory exists
+    final="$dest/$src"
+    if [ -e "$final" ]; then
+        # If destination exists, move its contents to the .lock directory
+        mkdir -p "$lock_dest"
+        mv "$final"/* "$lock_dest"
+        echo "Moved existing contents of \"$final\" to \"$lock_dest\""
+    fi
+
+    # Create destination directory
+    mkdir -p "$dest"
+
+    # Copy source to destination
+    cp -r "$src" "$dest"
+done