diff --git a/README.md b/README.md
index 52fa6a0c..2d6efaf5 100755
--- a/README.md
+++ b/README.md
@@ -107,8 +107,8 @@ Pre-built Docker images are available in the following Docker Hub repositories (
 
   Both the Calibre-Web and Calibre-Mod images are automatically rebuilt on new releases and updates.
 
-  - Set "path to convertertool" to `/usr/bin/ebook-convert`
-  - Set "path to unrar" to `/usr/bin/unrar`
+  - Set "Path to Calibre Binaries" to `/usr/bin`
+  - Set "Path to Unrar" to `/usr/bin/unrar`
 
 ## Contributor Recognition
 
diff --git a/cps/clean_html.py b/cps/clean_html.py
index 907bc59e..fc4fe6d1 100644
--- a/cps/clean_html.py
+++ b/cps/clean_html.py
@@ -35,7 +35,7 @@ def clean_string(unsafe_text, book_id=0):
     try:
         if bleach:
             allowed_tags = list(ALLOWED_TAGS)
-            allowed_tags.extend(['p', 'span', 'div', 'pre'])
+            allowed_tags.extend(["p", "span", "div", "pre", "h1", "h2", "h3", "h4", "h5", "h6"])
             safe_text = clean_html(unsafe_text, tags=set(allowed_tags))
         else:
             safe_text = clean_html(unsafe_text)
diff --git a/cps/editbooks.py b/cps/editbooks.py
index 64786c99..4a588c57 100644
--- a/cps/editbooks.py
+++ b/cps/editbooks.py
@@ -23,7 +23,7 @@
 import os
 from datetime import datetime
 import json
-from shutil import copyfile, move
+from shutil import copyfile
 from uuid import uuid4
 from markupsafe import escape, Markup  # dependency of flask
 from functools import wraps
diff --git a/cps/file_helper.py b/cps/file_helper.py
index 8e2b6847..ff0bebea 100644
--- a/cps/file_helper.py
+++ b/cps/file_helper.py
@@ -21,7 +21,6 @@ import os
 import shutil
 import zipfile
 import mimetypes
-import copy
 from io import BytesIO
 try:
     import magic
diff --git a/cps/metadata_provider/lubimyczytac.py b/cps/metadata_provider/lubimyczytac.py
index 02a96992..9d4a99f8 100644
--- a/cps/metadata_provider/lubimyczytac.py
+++ b/cps/metadata_provider/lubimyczytac.py
@@ -137,7 +137,7 @@ class LubimyCzytac(Metadata):
 
     def _prepare_query(self, title: str) -> str:
         query = ""
-        characters_to_remove = "\?()\/"
+        characters_to_remove = r"\?()\/"
         pattern = "[" + characters_to_remove + "]"
         title = re.sub(pattern, "", title)
         title = title.replace("_", " ")