Update test/nia-checksums-of-data.txt
diff --git a/test/nia-checksums-of-data.txt b/test/nia-checksums-of-data.txt
index 77f9cc4..7b5490a 100644
--- a/test/nia-checksums-of-data.txt
+++ b/test/nia-checksums-of-data.txt
@@ -29,6 +29,8 @@
b641fef2 test/data/bricks-nodither.gif
7aebfe6c test/data/bricks-nodither.png
ae2e547d test/data/bricks-nodither.wbmp
+b47730a2 test/data/checkerboard.gamma1dot0.png
+b47730a2 test/data/checkerboard.gamma2dot2.png
3014b4c0 test/data/gifplayer-muybridge.gif
030f5a48 test/data/harvesters.bmp
0d213dc4 test/data/harvesters.gif
