diff --git a/src/typescript/Scala.tmLanguage.ts b/src/typescript/Scala.tmLanguage.ts
index 0077f99..77dfbe0 100644
--- a/src/typescript/Scala.tmLanguage.ts
+++ b/src/typescript/Scala.tmLanguage.ts
@@ -490,7 +490,7 @@ export const scalaTmLanguage: TmLanguage = {
           name: 'keyword.control.flow.end.scala'
         },
         {
-          match: `^\\s*(end)\\s+(?:(new)|(${idUpper}))${endOfLineMaybeWithComment}`,
+          match: `^\\s*(end)\\s+(?:(new|extension)|(${idUpper}))${endOfLineMaybeWithComment}`,
           captures: {
             '1': {
               name: 'keyword.declaration.end.scala'
diff --git a/tests/unit/#107.test.scala b/tests/unit/#107.test.scala
index 48b86a5..f20904b 100644
--- a/tests/unit/#107.test.scala
+++ b/tests/unit/#107.test.scala
@@ -7,6 +7,10 @@
 //  ^^^ keyword.declaration.end.scala
 //      ^^^ keyword.declaration.end.scala
 
+    end extension
+//  ^^^ keyword.declaration.end.scala
+//      ^^^^^^^^^ keyword.declaration.end.scala
+
     end if
 //  ^^^ keyword.control.flow.end.scala
 //      ^^ keyword.control.flow.end.scala