diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3ebba76..af3521f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -4,7 +4,7 @@ on:
   pull_request:
 name: Test
 env:
-  SASS_VERSION: 1.77.5
+  SASS_VERSION: 1.63.2
 jobs:
   test:
     strategy:
diff --git a/transpiler_test.go b/transpiler_test.go
index d785f51..490f6c6 100644
--- a/transpiler_test.go
+++ b/transpiler_test.go
@@ -408,7 +408,7 @@ func TestVersion(t *testing.T) {
 	version, err := godartsass.Version(getSassEmbeddedFilename())
 	c.Assert(err, qt.IsNil)
 	c.Assert(version, qt.Not(qt.Equals), "")
-	c.Assert(version.ProtocolVersion, qt.Equals, "2.7.1")
+	c.Assert(version.ProtocolVersion, qt.Equals, "2.0.0")
 }
 
 func newTestTranspiler(c *qt.C, opts godartsass.Options) (*godartsass.Transpiler, func()) {