diff --git a/Quantumult/Rewrite/Block/YouTubeAds.conf b/Quantumult/Rewrite/Block/YouTubeAds.conf
index 5ac4391..911c1d3 100644
--- a/Quantumult/Rewrite/Block/YouTubeAds.conf
+++ b/Quantumult/Rewrite/Block/YouTubeAds.conf
@@ -1,7 +1,7 @@
 hostname = *.googlevideo.com,www.youtube.com,s.youtube.com
 
-(^https?:\/\/(?!redirector)[\w-]+\.googlevideo\.com\/(?!dclk_video_ads).+)(ctier=L)(&.+) url 302 $1ctier=A$3
-^https?:\/\/[\w-]+\.googlevideo\.com\/(?!(dclk_video_ads|videoplayback\?)).+?(&oad|ctier) url reject
+(^https?:\/\/(?!redirector)[\w-]+\.googlevideo\.com\/(?!dclk_video_ads).+)(ctier=[A-Z])(&.+) url 302 $1ctier=A$3
+^https?:\/\/[\w-]+\.googlevideo\.com\/(?!(dclk_video_ads|videoplayback\?)).+(&oad|ctier) url reject
 
 ^https?:\/\/(www|s)\.youtube\.com\/api\/stats\/ads url reject
 ^https?:\/\/(www|s)\.youtube\.com\/(pagead|ptracking) url reject
\ No newline at end of file
diff --git a/Surge/Module/Block/YouTubeAds.sgmodule b/Surge/Module/Block/YouTubeAds.sgmodule
index d7acbf7..de13467 100644
--- a/Surge/Module/Block/YouTubeAds.sgmodule
+++ b/Surge/Module/Block/YouTubeAds.sgmodule
@@ -3,8 +3,8 @@
 #!system=ios
 
 [URL Rewrite]
-(^https?:\/\/(?!redirector)[\w-]+\.googlevideo\.com\/(?!dclk_video_ads).+)(ctier=L)(&.+) $1ctier=A$3 header
-^https?:\/\/[\w-]+\.googlevideo\.com\/(?!(dclk_video_ads|videoplayback\?)).+?(&oad|ctier) - reject
+(^https?:\/\/(?!redirector)[\w-]+\.googlevideo\.com\/(?!dclk_video_ads).+)(ctier=[A-Z])(&.+) $1ctier=A$3 header
+^https?:\/\/[\w-]+\.googlevideo\.com\/(?!(dclk_video_ads|videoplayback\?)).+(&oad|ctier) - reject
 
 ^https?:\/\/(www|s)\.youtube\.com\/api\/stats\/ads - reject
 ^https?:\/\/(www|s)\.youtube\.com\/(pagead|ptracking) - reject