diff --git a/comicapi/comicarchive.py b/comicapi/comicarchive.py
index 34034bb..da4fd83 100644
--- a/comicapi/comicarchive.py
+++ b/comicapi/comicarchive.py
@@ -28,7 +28,6 @@ import zipfile
 from typing import cast
 
 import natsort
-import py7zr
 import wordninja
 
 from comicapi import filenamelexer, filenameparser, utils
@@ -37,6 +36,12 @@ from comicapi.comicbookinfo import ComicBookInfo
 from comicapi.comicinfoxml import ComicInfoXml
 from comicapi.genericmetadata import GenericMetadata, PageType
 
+try:
+    import py7zr
+
+    z7_support = True
+except ImportError:
+    z7_support = False
 try:
     from unrar.cffi import rarfile
 
@@ -756,15 +761,13 @@ class ComicArchive:
         self.archiver.path = pathlib.Path(path)
 
     def sevenzip_test(self) -> bool:
-        return py7zr.is_7zfile(self.path)
+        return z7_support and py7zr.is_7zfile(self.path)
 
     def zip_test(self) -> bool:
         return zipfile.is_zipfile(self.path)
 
     def rar_test(self) -> bool:
-        if rar_support:
-            return rarfile.is_rarfile(str(self.path))
-        return False
+        return rar_support and rarfile.is_rarfile(str(self.path))
 
     def folder_test(self) -> bool:
         return self.path.is_dir()
diff --git a/requirements-7Z.txt b/requirements-7Z.txt
new file mode 100644
index 0000000..014d24e
--- /dev/null
+++ b/requirements-7Z.txt
@@ -0,0 +1 @@
+py7zr
diff --git a/requirements.txt b/requirements.txt
index 77f2daa..844c274 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,6 @@ importlib_metadata>=3.3.0
 natsort>=8.1.0
 pathvalidate
 pillow>=9.1.0
-py7zr
 pycountry
 pyicu; sys_platform == 'linux' or sys_platform == 'darwin'
 rapidfuzz>=2.12.0
diff --git a/tests/comicarchive_test.py b/tests/comicarchive_test.py
index 9da035f..004758d 100644
--- a/tests/comicarchive_test.py
+++ b/tests/comicarchive_test.py
@@ -119,8 +119,11 @@ def test_invalid_zip(tmp_comic):
 
 archivers = [
     comicapi.comicarchive.ZipArchiver,
-    comicapi.comicarchive.SevenZipArchiver,
     comicapi.comicarchive.FolderArchiver,
+    pytest.param(
+        comicapi.comicarchive.SevenZipArchiver,
+        marks=pytest.mark.xfail(not (comicapi.comicarchive.z7_support), reason="7z support"),
+    ),
     pytest.param(
         comicapi.comicarchive.RarArchiver,
         marks=pytest.mark.xfail(not (comicapi.comicarchive.rar_support and shutil.which("rar")), reason="rar support"),