diff --git a/go.mod b/go.mod
index 6e9e36b..8a27dc3 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.25.0
 
 require (
 	github.com/stretchr/testify v1.11.1
-	github.com/vanng822/go-premailer v1.33.0
+	github.com/vanng822/go-premailer v1.34.0
 	github.com/vanng822/mail v1.0.0
 )
 
diff --git a/go.sum b/go.sum
index 89e825a..30a4c31 100644
--- a/go.sum
+++ b/go.sum
@@ -35,8 +35,8 @@ github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 github.com/vanng822/css v1.0.1 h1:10yiXc4e8NI8ldU6mSrWmSWMuyWgPr9DZ63RSlsgDw8=
 github.com/vanng822/css v1.0.1/go.mod h1:tcnB1voG49QhCrwq1W0w5hhGasvOg+VQp9i9H1rCM1w=
-github.com/vanng822/go-premailer v1.33.0 h1:nglIpKn/7e3kIAwYByiH5xpauFur7RwAucqyZ59hcic=
-github.com/vanng822/go-premailer v1.33.0/go.mod h1:LGYI7ym6FQ7KcHN16LiQRF+tlan7qwhP1KEhpTINFpo=
+github.com/vanng822/go-premailer v1.34.0 h1:CW7RUnjCfXrkuCbgC2wi/Cub7IwKslJWD/OkIBlcQUk=
+github.com/vanng822/go-premailer v1.34.0/go.mod h1:LGYI7ym6FQ7KcHN16LiQRF+tlan7qwhP1KEhpTINFpo=
 github.com/vanng822/mail v1.0.0 h1:HcfC1h7q6Q/d7baE3w2Rtn9MnLcfFWRY6rr1Zp2985c=
 github.com/vanng822/mail v1.0.0/go.mod h1:MfJTrOJFhAILRa7DykBnbxpNSc6JxwK4pOr4Hbh/1Ho=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=