diff --git a/is_bot/__init__.py b/is_bot/__init__.py
index 905ddd1..d5f3901 100644
--- a/is_bot/__init__.py
+++ b/is_bot/__init__.py
@@ -1,5 +1,5 @@
 from ._is_bot import Bots
 
-__version__ = '0.2.2'
+__version__ = '0.2.3'
 
 __all__ = ('Bots',)
diff --git a/is_bot/_patterns.py b/is_bot/_patterns.py
index 3663242..0e50390 100644
--- a/is_bot/_patterns.py
+++ b/is_bot/_patterns.py
@@ -1,7 +1,6 @@
 # https://github.com/omrilotan/isbot/tree/v3.6.3
 default_patterns = {
     " daum[ /]",
-    " DCV$",
     " deusu/",
     "(?:^| )site",
     "@[a-z]",
@@ -10,42 +9,29 @@
     "\\[at\\][a-z]",
     "^12345",
     "^<",
-    "^[\\w \\.]+/v?\\d+(\\.\\d+)?(\\.\\d{1,10})?$",
-    "^[\\w\\-\\(\\)]+$",
+    "^[\\w \\.\\-\\(\\)]+(/v?\\d+(\\.\\d+)?(\\.\\d{1,10})?)?$",
     "^[^ ]{50,}$",
-    "^ace explorer",
-    "^acoon",
     "^active",
     "^ad muncher",
     "^anglesharp/",
     "^anonymous",
-    "^apple-pubsub/",
-    "^astute srm",
     "^avsdevicesdk/",
     "^axios/",
     "^bidtellect/",
     "^biglotron",
-    "^blackboard safeassign",
-    "^blocknote.net",
-    "^braze sender",
-    "^captivenetworksupport",
+    "^btwebclient/",
     "^castro",
-    "^cf-uc ",
     "^clamav[ /]",
+    "^client/",
     "^cobweb/",
     "^coccoc",
     "^custom",
-    "^dap ",
     "^ddg[_-]android",
     "^discourse",
     "^dispatch/\\d",
     "^downcast/",
     "^duckduckgo",
-    "^email",
-    "^enigma browser",
-    "^evernote clip resolver",
     "^facebook",
-    "^faraday",
     "^fdm[ /]\\d",
     "^getright/",
     "^gozilla/",
@@ -53,35 +39,19 @@
     "^hobbit",
     "^hotzonu",
     "^hwcdn/",
-    "^invision",
     "^jeode/",
-    "^jetbrains",
     "^jetty/",
     "^jigsaw",
     "^linkdex",
     "^lwp[-: ]",
-    "^mailchimp\\.com$",
     "^metauri",
     "^microsoft bits",
-    "^microsoft data",
-    "^microsoft office existence",
-    "^microsoft office protocol discovery",
-    "^microsoft windows network diagnostics",
-    "^microsoft-cryptoapi",
-    "^microsoft-webdav-miniredir",
     "^movabletype",
     "^mozilla/\\d\\.\\d \\(compatible;?\\)$",
     "^mozilla/\\d\\.\\d \\w*$",
-    "^my browser$",
     "^navermailapp",
     "^netsurf",
-    "^nginx\\W",
-    "^node-superagent",
-    "^octopus",
     "^offline explorer",
-    "^pagething",
-    "^panscient",
-    "^perimeterx",
     "^php",
     "^postman",
     "^postrank",
@@ -89,35 +59,26 @@
     "^read",
     "^reed",
     "^restsharp/",
-    "^shareaza",
-    "^shockwave flash",
     "^snapchat",
     "^space bison",
-    "^sprinklr",
     "^svn",
     "^swcd ",
-    "^t-online browser",
     "^taringa",
     "^test certificate info",
-    "^the knowledge ai",
-    "^thinklab",
     "^thumbor/",
-    "^traackr.com",
     "^tumblr/",
-    "^uptime",
-    "^vbulletin",
+    "^user-agent:mozilla",
+    "^valid",
     "^venus/fedoraplanet",
     "^w3c",
     "^webbandit/",
     "^webcopier",
     "^wget",
     "^whatsapp",
-    "^www-mechanize",
     "^xenu link sleuth",
     "^yahoo",
     "^yandex",
     "^zdm/\\d",
-    "^zeushdthree",
     "^zoom marketplace/",
     "^{{.*}}$",
     "adbeat\\.com",
@@ -134,10 +95,9 @@
     "check",
     "chrome-lighthouse",
     "chromeframe",
-    "client",
     "cloud",
     "crawl",
-    "daemon",
+    "cryptoapi",
     "dareboost",
     "datanyze",
     "dataprovider",
@@ -173,13 +133,11 @@
     "optimize",
     "pageburst",
     "pagespeed",
-    "parse",
     "perl",
     "phantom",
     "pingdom",
     "powermarks",
     "preview",
-    "probe",
     "proxy",
     "ptst[ /]\\d",
     "reader",
@@ -193,6 +151,7 @@
     "server",
     "sogou",
     "sparkler/",
+    "speedcurve",
     "spider",
     "statuscake",
     "stumbleupon\\.com",
@@ -200,14 +159,12 @@
     "synapse",
     "synthetic",
     "taginspector/",
-    "toolbar",
     "torrent",
     "tracemyfile",
     "transcoder",
     "trendsmapresolver",
     "twingly recon",
     "url",
-    "valid",
     "virtuoso",
     "wappalyzer",
     "webglance",