diff --git a/Static-filter-syntax.md b/Static-filter-syntax.md
index e25614d..97ed715 100644
--- a/Static-filter-syntax.md
+++ b/Static-filter-syntax.md
@@ -203,7 +203,8 @@ uBO extends ABP filter syntax.
 - [$redirect](#redirect)
 - [$redirect-rule](#redirect-rule)
 - [$removeparam](#removeparam)
-- [$replace](#replace)
+- [$replace](#replace) (only from a trusted-source origin)
+- [$uritransform](#uritransform) (only from a trusted-source origin)
 
 ## Static network filtering
 
@@ -904,8 +905,20 @@ See also: [Filter Performance](./Filter-Performance#removeparam-modifier)
 
 #### `replace`
 
+Can only be used in a trusted-source origin.
+
 See <https://adguard.com/kb/general/ad-filtering/create-own-filters/#replace-modifier>
 
+[Documentation to be completed]
+
+#### `uritransform`
+
+Can only be used in a trusted-source origin.
+
+Transform the path/query/hash portion of a URL.
+
+[Documentation to be completed]
+
 ***
 
 ## Static extended filtering