diff --git a/shell/traverse_pdf.sh b/shell/traverse_pdf.sh
index e46dbfe..5207848 100755
--- a/shell/traverse_pdf.sh
+++ b/shell/traverse_pdf.sh
@@ -1,14 +1,19 @@
 #!/usr/bin/env bash
 
-# Directory to search (default: current directory or given argument)
-SEARCH_DIR="${1:-.}"
+# Directories to search (default: current directory if none provided)
+SEARCH_DIRS=("${@:-.}")
 
-# Your preferred PDF viewer (adjust as needed)
+# Your preferred PDF viewer
 PDF_VIEWER="zathura"
 
 # Ensure fzf and the viewer exist
 command -v fzf >/dev/null 2>&1 || { echo "fzf not found"; exit 1; }
 command -v "$PDF_VIEWER" >/dev/null 2>&1 || { echo "$PDF_VIEWER not found"; exit 1; }
 
-# Find all PDFs recursively and feed them to fzf in a loop
-find "$SEARCH_DIR" -type f -iname '*.pdf' | sort | fzf --multi --bind "enter:execute-silent($PDF_VIEWER {} &)" --preview "pdftotext {} - | head -n 20" --preview-window=down:wrap
+# Find all PDFs recursively, sorted by modification time (newest first)
+find "${SEARCH_DIRS[@]}" -type f -iname '*.pdf' -printf '%T@ %p\n' | \
+    sort -nr | cut -d' ' -f2- | \
+    fzf --multi \
+        --bind "enter:execute-silent($PDF_VIEWER {} &)" \
+        --preview "pdftotext {} - | head -n 20" \
+        --preview-window=down:wrap