diff --git a/LICENSE b/LICENSE
index db60a9646..f414ad955 100644
--- a/LICENSE
+++ b/LICENSE
@@ -24,6 +24,7 @@ added to the list of Contributing Authors:
    James Yu
    Mandar Sahastrabuddhe
    Google Inc.
+   Vadim Barkov
 
 and with the following additions to the disclaimer:
 
diff --git a/README b/README
index bddf3c452..706e6bbb4 100644
--- a/README
+++ b/README
@@ -182,7 +182,7 @@ Files in this distribution:
       powerpc       =>  Contains optimized code for the PowerPC platform
       contrib       =>  Contributions
        arm-neon         =>  Optimized code for ARM-NEON platform
-       powerpc          =>  Optimized code for POWERPC-VSX platform
+       powerpc-vsx      =>  Optimized code for POWERPC-VSX platform
        examples         =>  Example programs
        gregbook         =>  source code for PNG reading and writing, from
                             Greg Roelofs' "PNG: The Definitive Guide",
diff --git a/contrib/powerpc-vsx/linux.c b/contrib/powerpc-vsx/linux.c
index 8fc76e34c..534487ad2 100644
--- a/contrib/powerpc-vsx/linux.c
+++ b/contrib/powerpc-vsx/linux.c
@@ -1,7 +1,8 @@
 /* contrib/powerpc-vsx/linux.c
  *
- * Copyright (c) 2016 Glenn Randers-Pehrson
+ * Copyright (c) 2017 Glenn Randers-Pehrson
  * Written by Vadim Barkov, 2017.
+ * Last changed in libpng 1.6.29 [(PENDING RELEASE)]
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
diff --git a/contrib/powerpc-vsx/linux_aux.c b/contrib/powerpc-vsx/linux_aux.c
index d946d6cad..8dce65115 100644
--- a/contrib/powerpc-vsx/linux_aux.c
+++ b/contrib/powerpc-vsx/linux_aux.c
@@ -1,7 +1,8 @@
 /* contrib/powerpc-vsx/linux_aux.c
  *
- * Copyright (c) 2016 Glenn Randers-Pehrson
+ * Copyright (c) 2017 Glenn Randers-Pehrson
  * Written by Vadim Barkov, 2017.
+ * Last changed in libpng 1.6.29 [(PENDING RELEASE)]
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
diff --git a/libpng.3 b/libpng.3
index 84a8c0003..b41521713 100644
--- a/libpng.3
+++ b/libpng.3
@@ -6062,6 +6062,7 @@ added to the list of Contributing Authors:
    James Yu
    Mandar Sahastrabuddhe
    Google Inc.
+   Vadim Barkov
 
 and with the following additions to the disclaimer:
 
diff --git a/png.h b/png.h
index 9d8377bf9..4658481d5 100644
--- a/png.h
+++ b/png.h
@@ -39,6 +39,7 @@
  *    James Yu
  *    Mandar Sahastrabuddhe
  *    Google Inc.
+ *    Vadim Barkov
  *
  * and with the following additions to the disclaimer:
  *
diff --git a/powerpc/filter_vsx_intrinsics.c b/powerpc/filter_vsx_intrinsics.c
index 3a2de79da..26c5ee95d 100644
--- a/powerpc/filter_vsx_intrinsics.c
+++ b/powerpc/filter_vsx_intrinsics.c
@@ -1,8 +1,8 @@
 /* filter_vsx_intrinsics.c - PowerPC optimised filter functions
  *
- * Copyright (c) 2016 Glenn Randers-Pehrson
+ * Copyright (c) 2017 Glenn Randers-Pehrson
  * Written by Vadim Barkov, 2017.
- * Last changed in libpng 1.6.25 [September 1, 2016]
+ * Last changed in libpng 1.6.29 [(PENDING RELEASE)]
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
diff --git a/powerpc/powerpc_init.c b/powerpc/powerpc_init.c
index 9bbae8b5b..4ab2dd365 100644
--- a/powerpc/powerpc_init.c
+++ b/powerpc/powerpc_init.c
@@ -1,6 +1,9 @@
 
 /* powerpc_init.c - POWERPC optimised filter functions
  *
+ * Copyright (c) 2017 Glenn Randers-Pehrson
+ * Written by Vadim Barkov, 2017.
+ * Last changed in libpng 1.6.29 [(PENDING RELEASE)]
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer