diff --git a/desktop_env/evaluators/metrics/__init__.py b/desktop_env/evaluators/metrics/__init__.py
index d7a7520..6fdcf8d 100644
--- a/desktop_env/evaluators/metrics/__init__.py
+++ b/desktop_env/evaluators/metrics/__init__.py
@@ -20,7 +20,7 @@ from .chrome import (
     is_expected_active_tab,
     is_expected_url_pattern_match,
     is_added_to_steam_cart,
-    is_expected_installed_extensions
+    is_expected_installed_extensions,
     compare_pdf_images
 )
 from .docs import (
@@ -49,7 +49,7 @@ from .docs import (
     check_file_exists,
     check_tabstops,
     compare_contains_image,
-    compare_docx_files_and_ignore_new_lines
+    compare_docx_files_and_ignore_new_lines,
     compare_docx_images,
     compare_image_text,
     compare_references
@@ -72,7 +72,7 @@ from .general import (
     file_contains,
     compare_terminal_and_txt,
     fuzzy_place_math,
-    compare_python_pure_text
+    compare_python_pure_text,
     diff_text_file,
     literal_match
 )
diff --git a/requirements.txt b/requirements.txt
index fdcb95d..f6e2da6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,3 +46,4 @@ PyYaml
 mutagen
 pytesseract
 borb
+pdfplumber