diff --git a/PerlMagick/t/png/write-16.t b/PerlMagick/t/png/write-16.t
index e25d80a..a324f17 100644
--- a/PerlMagick/t/png/write-16.t
+++ b/PerlMagick/t/png/write-16.t
@@ -37,7 +37,7 @@
++$test;
testReadWrite( 'input_mono.png',
'output_mono.png', '',
- '7e704fc1a99118630a92374ba27adf5baf69f30019016be2ed70eac79629e8b4' );
+ '1502b4e5747ed8805fe9103f56f9c4097f60440b3a867fa6b1ae0ba81f12a90d' );
#
# 4) Test Multiple-image Network Graphics
@@ -56,6 +56,6 @@
'output_16.png',
q/quality=>55/,
'd4bed86abb1849f69f1a5afb7c5cf8798e8192ba228357f189c277198c14f5a0',
- '5647f05ec18958947d32874eeb788fa396a05d0bab7c1b71f112ceb7e9b31eee');
+ '30e14955ebf1352266dc2ff8067e68104607e750abb9d3b36582b8af909fcb58');
diff --git a/PerlMagick/t/png/write.t b/PerlMagick/t/png/write.t
index 0383c43..b166a7b 100644
--- a/PerlMagick/t/png/write.t
+++ b/PerlMagick/t/png/write.t
@@ -19,7 +19,7 @@
#
print( "1-bit grayscale PNG ...\n" );
testReadWrite( 'input_bw.png', 'output_bw.png', q/quality=>95/,
- 'fe660b68ebf6e851ed91840b8ff8b083fcf8a58f675c8d699516e01a9946d85a');
+ 'b0ed82ae119a2baa1e8bf714fab26415708c47b8f07771fb5506ff101a550dbc');
#
# 2) Test monochrome image
@@ -28,7 +28,7 @@
print( "8-bit grayscale PNG ...\n" );
testReadWrite( 'input_mono.png',
'output_mono.png', '',
- '7e704fc1a99118630a92374ba27adf5baf69f30019016be2ed70eac79629e8b4');
+ '1502b4e5747ed8805fe9103f56f9c4097f60440b3a867fa6b1ae0ba81f12a90d');
#
# 3) Test 16-bit Portable Network Graphics
#
@@ -38,7 +38,7 @@
'output_16.png',
q/quality=>55/,
'd4bed86abb1849f69f1a5afb7c5cf8798e8192ba228357f189c277198c14f5a0',
- '5647f05ec18958947d32874eeb788fa396a05d0bab7c1b71f112ceb7e9b31eee' );
+ '30e14955ebf1352266dc2ff8067e68104607e750abb9d3b36582b8af909fcb58' );
#
# 4) Test pseudocolor image
#