diff --git a/py/objstr.c b/py/objstr.c
index 1b12147fd..5764c5ae3 100644
--- a/py/objstr.c
+++ b/py/objstr.c
@@ -4,7 +4,7 @@
  * The MIT License (MIT)
  *
  * Copyright (c) 2013, 2014 Damien P. George
- * Copyright (c) 2014 Paul Sokolovsky
+ * Copyright (c) 2014-2018 Paul Sokolovsky
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
diff --git a/py/objstringio.c b/py/objstringio.c
index b405ee21e..eca7ca947 100644
--- a/py/objstringio.c
+++ b/py/objstringio.c
@@ -4,7 +4,7 @@
  * The MIT License (MIT)
  *
  * Copyright (c) 2013, 2014 Damien P. George
- * Copyright (c) 2014 Paul Sokolovsky
+ * Copyright (c) 2014-2017 Paul Sokolovsky
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
diff --git a/py/objstrunicode.c b/py/objstrunicode.c
index 13da922a8..eac717117 100644
--- a/py/objstrunicode.c
+++ b/py/objstrunicode.c
@@ -4,7 +4,7 @@
  * The MIT License (MIT)
  *
  * Copyright (c) 2013, 2014 Damien P. George
- * Copyright (c) 2014 Paul Sokolovsky
+ * Copyright (c) 2014-2016 Paul Sokolovsky
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
diff --git a/py/objtuple.c b/py/objtuple.c
index 34b7664eb..e570a7fb1 100644
--- a/py/objtuple.c
+++ b/py/objtuple.c
@@ -4,6 +4,7 @@
  * The MIT License (MIT)
  *
  * Copyright (c) 2013, 2014 Damien P. George
+ * Copyright (c) 2014-2017 Paul Sokolovsky
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
diff --git a/py/objtype.c b/py/objtype.c
index fec73f16e..68ee74cf5 100644
--- a/py/objtype.c
+++ b/py/objtype.c
@@ -4,7 +4,7 @@
  * The MIT License (MIT)
  *
  * Copyright (c) 2013-2018 Damien P. George
- * Copyright (c) 2014-2016 Paul Sokolovsky
+ * Copyright (c) 2014-2018 Paul Sokolovsky
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
diff --git a/py/runtime.c b/py/runtime.c
index c1e047813..5a9e383ff 100644
--- a/py/runtime.c
+++ b/py/runtime.c
@@ -4,6 +4,7 @@
  * The MIT License (MIT)
  *
  * Copyright (c) 2013, 2014 Damien P. George
+ * Copyright (c) 2014-2018 Paul Sokolovsky
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
diff --git a/py/stream.c b/py/stream.c
index 2a9acdea7..762cd0fc0 100644
--- a/py/stream.c
+++ b/py/stream.c
@@ -3,8 +3,8 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2013, 2014 Damien P. George
- * Copyright (c) 2014 Paul Sokolovsky
+ * Copyright (c) 2014 Damien P. George
+ * Copyright (c) 2014-2016 Paul Sokolovsky
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
diff --git a/py/vm.c b/py/vm.c
index fce59349f..d8d287f25 100644
--- a/py/vm.c
+++ b/py/vm.c
@@ -4,7 +4,7 @@
  * The MIT License (MIT)
  *
  * Copyright (c) 2013, 2014 Damien P. George
- * Copyright (c) 2014 Paul Sokolovsky
+ * Copyright (c) 2014-2015 Paul Sokolovsky
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
diff --git a/py/warning.c b/py/warning.c
index ebaf2d078..cba21ba6c 100644
--- a/py/warning.c
+++ b/py/warning.c
@@ -4,6 +4,7 @@
  * The MIT License (MIT)
  *
  * Copyright (c) 2014 Damien P. George
+ * Copyright (c) 2015-2018 Paul Sokolovsky
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal