Update year
diff --git a/tools/dockerfile/grpc_base/Dockerfile b/tools/dockerfile/grpc_base/Dockerfile
index a291bc9..d2b5569 100644
--- a/tools/dockerfile/grpc_base/Dockerfile
+++ b/tools/dockerfile/grpc_base/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_clang/Dockerfile b/tools/dockerfile/grpc_clang/Dockerfile
index 9277aa3..bb107cd 100644
--- a/tools/dockerfile/grpc_clang/Dockerfile
+++ b/tools/dockerfile/grpc_clang/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_cxx/Dockerfile b/tools/dockerfile/grpc_cxx/Dockerfile
index fdd1724..18c6732 100644
--- a/tools/dockerfile/grpc_cxx/Dockerfile
+++ b/tools/dockerfile/grpc_cxx/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_go/Dockerfile b/tools/dockerfile/grpc_go/Dockerfile
index b928b08..94d962b4 100644
--- a/tools/dockerfile/grpc_go/Dockerfile
+++ b/tools/dockerfile/grpc_go/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_java/Dockerfile b/tools/dockerfile/grpc_java/Dockerfile
index cee23bc..affbec9 100644
--- a/tools/dockerfile/grpc_java/Dockerfile
+++ b/tools/dockerfile/grpc_java/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_java_base/Dockerfile b/tools/dockerfile/grpc_java_base/Dockerfile
index 26e1916..feac5e7 100644
--- a/tools/dockerfile/grpc_java_base/Dockerfile
+++ b/tools/dockerfile/grpc_java_base/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_node/Dockerfile b/tools/dockerfile/grpc_node/Dockerfile
index afe40a4..60c897b 100644
--- a/tools/dockerfile/grpc_node/Dockerfile
+++ b/tools/dockerfile/grpc_node/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_node_base/Dockerfile b/tools/dockerfile/grpc_node_base/Dockerfile
index 2e3b42b..d7c7807 100644
--- a/tools/dockerfile/grpc_node_base/Dockerfile
+++ b/tools/dockerfile/grpc_node_base/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_php/Dockerfile b/tools/dockerfile/grpc_php/Dockerfile
index d2466b8..6534e0d 100644
--- a/tools/dockerfile/grpc_php/Dockerfile
+++ b/tools/dockerfile/grpc_php/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_php_base/Dockerfile b/tools/dockerfile/grpc_php_base/Dockerfile
index 251c2f0..cce92b0 100644
--- a/tools/dockerfile/grpc_php_base/Dockerfile
+++ b/tools/dockerfile/grpc_php_base/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_python/Dockerfile b/tools/dockerfile/grpc_python/Dockerfile
index c962778..0939253 100644
--- a/tools/dockerfile/grpc_python/Dockerfile
+++ b/tools/dockerfile/grpc_python/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_python_base/Dockerfile b/tools/dockerfile/grpc_python_base/Dockerfile
index 099ffb6..2b1a1c0 100644
--- a/tools/dockerfile/grpc_python_base/Dockerfile
+++ b/tools/dockerfile/grpc_python_base/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_ruby/Dockerfile b/tools/dockerfile/grpc_ruby/Dockerfile
index 318e577..2c11620 100644
--- a/tools/dockerfile/grpc_ruby/Dockerfile
+++ b/tools/dockerfile/grpc_ruby/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/tools/dockerfile/grpc_ruby_base/Dockerfile b/tools/dockerfile/grpc_ruby_base/Dockerfile
index 070768a..234d024 100644
--- a/tools/dockerfile/grpc_ruby_base/Dockerfile
+++ b/tools/dockerfile/grpc_ruby_base/Dockerfile
@@ -1,4 +1,4 @@
-# Copyright 2014, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without