diff --git a/cps/dep_check.py b/cps/dep_check.py
index 12436d1d..1c404940 100644
--- a/cps/dep_check.py
+++ b/cps/dep_check.py
@@ -3,7 +3,7 @@ import re
 
 from .constants import BASE_DIR
 try:
-    from importlib_metadata import version
+    from importlib.metadata import version
     importlib = True
     ImportNotFound = BaseException
 except ImportError:
diff --git a/optional-requirements.txt b/optional-requirements.txt
index 2370bc7e..f7c7b572 100644
--- a/optional-requirements.txt
+++ b/optional-requirements.txt
@@ -10,7 +10,6 @@ pyasn1>=0.1.9,<0.5.0
 PyDrive2>=1.3.1,<1.11.0
 PyYAML>=3.12
 rsa>=3.4.2,<4.9.0
-# six>=1.10.0,<1.17.0
 
 # Gmail
 google-auth-oauthlib>=0.4.3,<0.5.0
@@ -34,7 +33,7 @@ scholarly>=1.2.0,<1.6
 markdown2>=2.0.0,<2.5.0
 html2text>=2020.1.16,<2022.1.1
 python-dateutil>=2.1,<2.9.0
-beautifulsoup4>=4.0.1,<4.2.0
+beautifulsoup4>=4.0.1,<4.11.0
 cchardet>=2.0.0,<2.2.0
 
 # Comics
diff --git a/setup.cfg b/setup.cfg
index 5053d19f..98df890c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -38,6 +38,7 @@ console_scripts =
 [options]
 include_package_data = True
 install_requires = 
+	APScheduler>=3.6.3,<3.8.0
 	Babel>=1.3,<3.0
 	Flask-Babel>=0.11.1,<2.1.0
 	Flask-Login>=0.3.2,<0.5.1
@@ -70,7 +71,6 @@ gdrive =
 	PyDrive2>=1.3.1,<1.11.0
 	PyYAML>=3.12
 	rsa>=3.4.2,<4.9.0
-	six>=1.10.0,<1.17.0
 gmail = 
 	google-auth-oauthlib>=0.4.3,<0.5.0
 	google-api-python-client>=1.7.11,<2.37.0
@@ -89,7 +89,7 @@ metadata =
 	markdown2>=2.0.0,<2.5.0
 	html2text>=2020.1.16,<2022.1.1
 	python-dateutil>=2.1,<2.9.0
-	beautifulsoup4>=4.0.1,<4.2.0
+	beautifulsoup4>=4.0.1,<4.11.0
 	cchardet>=2.0.0,<2.2.0
 comics = 
 	natsort>=2.2.0,<8.2.0