diff --git a/cps/__init__.py b/cps/__init__.py
index 8b0b86ad..f4f8dbf2 100644
--- a/cps/__init__.py
+++ b/cps/__init__.py
@@ -64,7 +64,8 @@ mimetypes.add_type('application/x-mobi8-ebook', '.azw3')
 mimetypes.add_type('application/x-cbr', '.cbr')
 mimetypes.add_type('application/x-cbz', '.cbz')
 mimetypes.add_type('application/x-cbt', '.cbt')
-mimetypes.add_type('image/vnd.djvu', '.djvu')
+mimetypes.add_type('application/x-cb7', '.cb7')
+mimetypes.add_type('image/vnd.djv', '.djv')
 mimetypes.add_type('application/mpeg', '.mpeg')
 mimetypes.add_type('application/mpeg', '.mp3')
 mimetypes.add_type('application/mp4', '.m4a')
diff --git a/cps/comic.py b/cps/comic.py
index 13774756..4242bb2f 100644
--- a/cps/comic.py
+++ b/cps/comic.py
@@ -52,6 +52,12 @@ except (ImportError, LookupError) as e:
     except (ImportError, SyntaxError) as e:
         log.debug('Cannot import rarfile, extracting cover files from rar files will not work: %s', e)
         use_rarfile = False
+    try:
+        import py7zr
+        use_7zip = True
+    except (ImportError, SyntaxError) as e:
+        log.debug('Cannot import py7zr, extracting cover files from CB7 files will not work: %s', e)
+        use_7zip = False
     use_comic_meta = False
 
 
@@ -84,10 +90,22 @@ def _extract_cover_from_archive(original_file_extension, tmp_file_name, rar_exec
                 if len(ext) > 1:
                     extension = ext[1].lower()
                     if extension in cover.COVER_EXTENSIONS:
-                        cover_data = cf.read(name)
+                        cover_data = cf.read([name])
                         break
         except Exception as ex:
-            log.debug('Rarfile failed with error: {}'.format(ex))
+            log.error('Rarfile failed with error: {}'.format(ex))
+    elif original_file_extension.upper() == '.CB7' and use_7zip:
+        cf = py7zr.SevenZipFile(tmp_file_name)
+        for name in cf.getnames():
+            ext = os.path.splitext(name)
+            if len(ext) > 1:
+                extension = ext[1].lower()
+                if extension in cover.COVER_EXTENSIONS:
+                    try:
+                        cover_data = cf.read(name)[name].read()
+                    except (py7zr.Bad7zFile, OSError) as ex:
+                        log.error('7Zip file failed with error: {}'.format(ex))
+                    break
     return cover_data, extension
 
 
diff --git a/cps/uploader.py b/cps/uploader.py
index bf30094d..23dfc4a6 100644
--- a/cps/uploader.py
+++ b/cps/uploader.py
@@ -79,7 +79,7 @@ def process(tmp_file_path, original_file_name, original_file_extension, rar_exec
             meta = epub.get_epub_info(tmp_file_path, original_file_name, original_file_extension)
         elif ".FB2" == extension_upper and use_fb2_meta is True:
             meta = fb2.get_fb2_info(tmp_file_path, original_file_extension)
-        elif extension_upper in ['.CBZ', '.CBT', '.CBR']:
+        elif extension_upper in ['.CBZ', '.CBT', '.CBR', ".CB7"]:
             meta = comic.get_comic_info(tmp_file_path,
                                         original_file_name,
                                         original_file_extension,
diff --git a/optional-requirements.txt b/optional-requirements.txt
index ff02d04f..d34d09aa 100644
--- a/optional-requirements.txt
+++ b/optional-requirements.txt
@@ -35,6 +35,7 @@ html2text>=2020.1.16,<2022.1.1
 python-dateutil>=2.1,<2.9.0
 beautifulsoup4>=4.0.1,<4.12.0
 faust-cchardet>=2.1.18
+py7zr>=0.15.0,<0.21.0
 
 # Comics
 natsort>=2.2.0,<8.4.0