diff --git a/MANIFEST b/MANIFEST
index 646fc043c3..8823563dd0 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -1394,6 +1394,7 @@
 ./tools/h5diff/testfiles/h5diff_16_3.txt
 ./tools/h5diff/testfiles/h5diff_17.txt
 ./tools/h5diff/testfiles/h5diff_18.txt
+./tools/h5diff/testfiles/h5diff_19.txt
 ./tools/h5diff/testfiles/h5diff_20.txt
 ./tools/h5diff/testfiles/h5diff_21.txt
 ./tools/h5diff/testfiles/h5diff_22.txt