diff --git a/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.0.dump b/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.0.dump
index 1b6f763b56..94378b0f98 100644
--- a/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.0.dump
+++ b/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.0.dump
@@ -271,6 +271,7 @@ track 3:
   format 0:
     id = 3
     sampleMimeType = application/x-subrip
+    selectionFlags = 1
     language = en
     label = Subs Label
   sample 0:
diff --git a/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.1.dump b/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.1.dump
index 1b6f763b56..94378b0f98 100644
--- a/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.1.dump
+++ b/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.1.dump
@@ -271,6 +271,7 @@ track 3:
   format 0:
     id = 3
     sampleMimeType = application/x-subrip
+    selectionFlags = 1
     language = en
     label = Subs Label
   sample 0:
diff --git a/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.2.dump b/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.2.dump
index 1b6f763b56..94378b0f98 100644
--- a/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.2.dump
+++ b/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.2.dump
@@ -271,6 +271,7 @@ track 3:
   format 0:
     id = 3
     sampleMimeType = application/x-subrip
+    selectionFlags = 1
     language = en
     label = Subs Label
   sample 0:
diff --git a/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.3.dump b/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.3.dump
index 1b6f763b56..94378b0f98 100644
--- a/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.3.dump
+++ b/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.3.dump
@@ -271,6 +271,7 @@ track 3:
   format 0:
     id = 3
     sampleMimeType = application/x-subrip
+    selectionFlags = 1
     language = en
     label = Subs Label
   sample 0:
diff --git a/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.unknown_length.dump b/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.unknown_length.dump
index 1b6f763b56..94378b0f98 100644
--- a/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.unknown_length.dump
+++ b/testdata/src/test/assets/extractordumps/mkv/sample_with_srt.mkv.unknown_length.dump
@@ -271,6 +271,7 @@ track 3:
   format 0:
     id = 3
     sampleMimeType = application/x-subrip
+    selectionFlags = 1
     language = en
     label = Subs Label
   sample 0:
diff --git a/testdata/src/test/assets/media/mkv/sample_with_srt.mkv b/testdata/src/test/assets/media/mkv/sample_with_srt.mkv
index bdd56d877f..a7cea2a7ec 100644
Binary files a/testdata/src/test/assets/media/mkv/sample_with_srt.mkv and b/testdata/src/test/assets/media/mkv/sample_with_srt.mkv differ