diff --git a/src/typescript/Scala.tmLanguage.ts b/src/typescript/Scala.tmLanguage.ts
index e7338f2..2e4a1fd 100644
--- a/src/typescript/Scala.tmLanguage.ts
+++ b/src/typescript/Scala.tmLanguage.ts
@@ -1017,7 +1017,7 @@ export const scalaTmLanguage: TmLanguage = {
     inheritance: {
       patterns: [
         {
-          match: `(extends|with|derives)\\s+(${idUpper}|${backQuotedId}|(?=\\([^\\)]+=>)|(?=${plainid})|(?="))`,
+          match: `\\b(extends|with|derives)\\b\\s*(${idUpper}|${backQuotedId}|(?=\\([^\\)]+=>)|(?=${plainid})|(?="))?`,
           captures: {
             '1': {
               name: 'keyword.declaration.scala'
diff --git a/tests/unit/#156.test.scala b/tests/unit/#156.test.scala
new file mode 100644
index 0000000..541dfd4
--- /dev/null
+++ b/tests/unit/#156.test.scala
@@ -0,0 +1,55 @@
+// SYNTAX TEST "source.scala"
+
+
+    class Foo extends
+//  ^^^^^ keyword.declaration.scala
+//        ^^^ entity.name.class.declaration
+//            ^^^^^^^ keyword.declaration.scala
+
+    class Foo extends Bar with Baz
+//  ^^^^^ keyword.declaration.scala
+//        ^^^ entity.name.class.declaration
+//            ^^^^^^^ keyword.declaration.scala
+//                    ^^^ entity.other.inherited-class.scala
+//                        ^^^^ keyword.declaration.scala
+//                             ^^^ entity.other.inherited-class.scala
+
+    class Foo extends Bar with
+//  ^^^^^ keyword.declaration.scala
+//        ^^^ entity.name.class.declaration
+//            ^^^^^^^ keyword.declaration.scala
+//                    ^^^ entity.other.inherited-class.scala
+//                        ^^^^ keyword.declaration.scala
+
+
+    given tc: TC with {}
+//  ^^^^^ keyword.declaration.scala
+//        ^^ variable.parameter.scala
+//            ^^ entity.name.class
+//               ^^^^ keyword.declaration.scala
+
+    given Liftable[Boolean] with {
+//  ^^^^^ keyword.declaration.scala
+//        ^^^^^^^^ entity.name.class
+//                 ^^^^^^^ entity.name.class
+//                          ^^^^ keyword.declaration.scala
+
+    given listMonad: Monad[List] with
+//  ^^^^^ keyword.declaration.scala
+//        ^^^^^^^^^ variable.parameter.scala
+//                   ^^^^^ entity.name.class
+//                         ^^^^ entity.name.class
+//                               ^^^^ keyword.declaration.scala
+
+    enum Opt[+T] derives Eq {
+//  ^^^^ keyword.declaration.scala
+//       ^^^ entity.name.class.declaration
+//            ^ entity.name.class
+//               ^^^^^^^ keyword.declaration.scala
+//                       ^^ entity.other.inherited-class.scala
+
+    enum Opt[+T] derives
+//  ^^^^ keyword.declaration.scala
+//       ^^^ entity.name.class.declaration
+//            ^ entity.name.class
+//               ^^^^^^^ keyword.declaration.scala