diff --git a/cps/config_sql.py b/cps/config_sql.py
index bbca32415..c73a6cf07 100644
--- a/cps/config_sql.py
+++ b/cps/config_sql.py
@@ -403,7 +403,7 @@ class ConfigSQL(object):
         self.save()
 
     def get_book_path(self):
-        return self.config_calibre_split_dir if self.config_calibre_split_dir else self.config_calibre_dir
+        return self.config_calibre_split_dir if self.config_calibre_split else self.config_calibre_dir
 
     def store_calibre_uuid(self, calibre_db, Library_table):
         from . import app
diff --git a/cps/constants.py b/cps/constants.py
index 1a5af1352..1ddef87cf 100644
--- a/cps/constants.py
+++ b/cps/constants.py
@@ -175,7 +175,7 @@ BookMeta = namedtuple('BookMeta', 'file_path, extension, title, author, cover, d
                                   'series_id, languages, publisher, pubdate, identifiers')
 
 # python build process likes to have x.y.zbw -> b for beta and w a counting number
-STABLE_VERSION =  '0.6.26'
+STABLE_VERSION =  '0.6.27b'
 
 NIGHTLY_VERSION = dict()
 NIGHTLY_VERSION[0] = '$Format:%H$'
diff --git a/optional-requirements.txt b/optional-requirements.txt
index 6d75d5729..5d0da2197 100644
--- a/optional-requirements.txt
+++ b/optional-requirements.txt
@@ -1,8 +1,8 @@
 # GDrive Integration
 google-api-python-client>=2.73.00,<2.200.0
-gevent>20.6.0,<24.12.0
-greenlet>=0.4.17,<3.3.0
-httplib2>=0.9.2,<0.23.0
+gevent>20.6.0,<25.9.2
+greenlet>=0.4.17,<3.4.0
+httplib2>=0.9.2,<0.32.0
 oauth2client>=4.0.0,<4.1.4
 uritemplate>=3.0.0,<4.3.0
 pyasn1-modules>=0.0.8,<0.7.0
@@ -21,19 +21,19 @@ python-Levenshtein>=0.12.0,<0.28.0
 
 # ldap login
 python-ldap>=3.0.0,<3.5.0
-Flask-SimpleLDAP>=1.4.0,<2.1.0
+Flask-SimpleLDAP>=1.4.0,<2.2.0
 
 # oauth
 Flask-Dance>=2.0.0,<7.2.0
-SQLAlchemy-Utils>=0.33.5,<0.42.0
+SQLAlchemy-Utils>=0.33.5,<0.43.0
 
 # metadata extraction
 rarfile>=3.2,<5.0
 scholarly>=1.2.0,<1.8
 markdown2>=2.0.0,<2.6.0
-html2text>=2020.1.16,<2025.2.26
+html2text>=2020.1.16,<2025.4.16
 python-dateutil>=2.1,<2.10.0
-beautifulsoup4>=4.0.1,<4.14.0
+beautifulsoup4>=4.0.1,<4.15.0
 faust-cchardet>=2.1.18,<2.1.20
 py7zr>=0.15.0,<0.21.0
 mutagen>=1.40.0,<1.50.0
diff --git a/requirements.txt b/requirements.txt
index 9c858ede5..60ceea4b6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,23 +5,23 @@ Flask-Principal>=0.3.2,<0.5.1
 Flask>=1.0.2,<3.2.0
 iso-639>=0.4.5,<0.5.0;python_version<'3.12'
 pycountry>=20.0.0,<25.0.0;python_version>='3.12'
-PyPDF>=6.1.3,<6.5.0
+PyPDF>=6.1.3,<6.7.0
 pytz>=2016.10
 requests>=2.32.0,<2.33.0
 SQLAlchemy>=1.3.0,<2.1.0
 tornado>=6.4.2,<6.6
 Wand>=0.4.4,<0.7.0
-unidecode>=0.04.19,<1.4.0
+unidecode>=0.04.19,<1.5.0
 lxml>=4.9.1,<5.4.0
 flask-wtf>=0.14.2,<1.3.0
 chardet>=3.0.0,<5.3.0
 netifaces-plus>=0.12.0,<0.13.0
 urllib3>=1.22,<3.0
-Flask-Limiter>=2.3.0,<3.13.0
-regex>=2022.3.2,<2025.3.20
-bleach>=6.0.0,<6.3.0
+Flask-Limiter>=2.3.0,<4.2.0
+regex>=2022.3.2,<2026.1.16
+bleach>=6.0.0,<6.4.0
 python-magic>=0.4.27,<0.5.0
 python-magic-bin>=0.4.0,<0.5.0;sys_platform=='win32'
 flask-httpAuth>=4.4.0,<5.0.0
-cryptography>=39.0.0,<45.0.0
-certifi>=2024.7.4,<2025.8.24
+cryptography>=39.0.0,<47.0.0
+certifi>=2024.7.4,<2026.1.5