diff --git a/CHANGELOG.md b/CHANGELOG.md
index a2571cb..61a75e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,4 @@
 ## 1.0.0-beta.8
 
-* Internal changes only.
+* Support version 1.0.0-beta.11 of the Sass embedded protocol:
+  * Set CanonicalizeRequest.from_import.
diff --git a/lib/src/importer.dart b/lib/src/importer.dart
index 7e87148..da1dfe5 100644
--- a/lib/src/importer.dart
+++ b/lib/src/importer.dart
@@ -29,7 +29,8 @@ class Importer extends sass.Importer {
           .sendCanonicalizeRequest(OutboundMessage_CanonicalizeRequest()
             ..compilationId = _compilationId
             ..importerId = _importerId
-            ..url = url.toString());
+            ..url = url.toString()
+            ..fromImport = fromImport);
 
       switch (response.whichResult()) {
         case InboundMessage_CanonicalizeResponse_Result.url:
diff --git a/pubspec.yaml b/pubspec.yaml
index 28765ef..31f3ebc 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -14,7 +14,7 @@ dependencies:
   async: ">=1.13.0 <3.0.0"
   meta: ^1.1.0
   protobuf: ^2.0.0
-  sass: ^1.25.0
+  sass: ^1.33.0
   source_maps: ^0.10.5
   source_span: ^1.1.0
   stack_trace: ^1.6.0