Update date in copyright line
diff --git a/programs/x509/cert_app.c b/programs/x509/cert_app.c
index e555bdb..4ae3994 100644
--- a/programs/x509/cert_app.c
+++ b/programs/x509/cert_app.c
@@ -1,7 +1,7 @@
 /*
  *  Certificate reading application
  *
- *  Copyright (C) 2006-2013, ARM Limited, All Rights Reserved
+ *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
  *
  *  This file is part of mbed TLS (https://tls.mbed.org)
  *
diff --git a/programs/x509/cert_req.c b/programs/x509/cert_req.c
index 9ea08bd..0716466 100644
--- a/programs/x509/cert_req.c
+++ b/programs/x509/cert_req.c
@@ -1,7 +1,7 @@
 /*
  *  Certificate request generation
  *
- *  Copyright (C) 2006-2011, ARM Limited, All Rights Reserved
+ *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
  *
  *  This file is part of mbed TLS (https://tls.mbed.org)
  *
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
index 8c4e6da..1d287d8 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -1,7 +1,7 @@
 /*
  *  Certificate generation and signing
  *
- *  Copyright (C) 2006-2013, ARM Limited, All Rights Reserved
+ *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
  *
  *  This file is part of mbed TLS (https://tls.mbed.org)
  *
diff --git a/programs/x509/crl_app.c b/programs/x509/crl_app.c
index 5bcd54a..20a61ba 100644
--- a/programs/x509/crl_app.c
+++ b/programs/x509/crl_app.c
@@ -1,7 +1,7 @@
 /*
  *  CRL reading application
  *
- *  Copyright (C) 2006-2013, ARM Limited, All Rights Reserved
+ *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
  *
  *  This file is part of mbed TLS (https://tls.mbed.org)
  *
diff --git a/programs/x509/req_app.c b/programs/x509/req_app.c
index a3cd329..5a6f879 100644
--- a/programs/x509/req_app.c
+++ b/programs/x509/req_app.c
@@ -1,7 +1,7 @@
 /*
  *  Certificate request reading application
  *
- *  Copyright (C) 2006-2013, ARM Limited, All Rights Reserved
+ *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
  *
  *  This file is part of mbed TLS (https://tls.mbed.org)
  *