diff --git a/authors.xml b/authors.xml
index fde581789d..4b43aba8f4 100644
--- a/authors.xml
+++ b/authors.xml
@@ -36,11 +36,11 @@
   <contributor role="author" last-active="1.0">Xavier Bouchoux</contributor>
   <contributor role="author" last-active="1.2">Roberto Boyd</contributor>
   <contributor role="author" last-active="2.0">Stanislav Brabec</contributor>
-  <contributor role="author" last-active="2.6">Hans Breuer</contributor>
+  <contributor role="author" last-active="2.8">Hans Breuer</contributor>
   <contributor role="author" last-active="2.8">Simon Budig</contributor>
   <contributor role="author" last-active="2.8">João S. O. Bueno</contributor>
   <contributor role="documenter" last-active="1.2">Carey Bunks</contributor>
-  <contributor role="author" last-active="2.4">Seth Burgess</contributor>
+  <contributor role="author" last-active="2.8">Seth Burgess</contributor>
   <contributor role="author" last-active="1.0">Brent Burton</contributor>
   <contributor role="author" last-active="1.0">Francisco Bustamante</contributor>
   <contributor role="author" last-active="1.0">Albert Cahalan</contributor>
@@ -74,7 +74,7 @@
   <contributor role="author" last-active="1.2">Misha Dynin</contributor>
   <contributor role="author" last-active="2.8">Daniel Eddeland</contributor>
   <contributor role="author" last-active="2.4">Daniel Egger</contributor>
-  <contributor role="author documenter" last-active="2.6">Ulf-D. Ehlert</contributor>
+  <contributor role="author documenter" last-active="2.8">Ulf-D. Ehlert</contributor>
   <contributor role="author" last-active="2.0">Morton Eriksen</contributor>
   <contributor role="author" last-active="2.0">Larry Ewing</contributor>
   <contributor role="documenter" last-active="2.6">Alessandro Falappa</contributor>
@@ -97,9 +97,9 @@
   <contributor role="author" last-active="1.2">Scott Goehring</contributor>
   <contributor role="author" last-active="1.2">Heiko Goller</contributor>
   <contributor role="author" last-active="1.0">Marcelo de Gomensoro Malheiros</contributor>
-  <contributor role="author" last-active="2.4">Saul Goode</contributor>
-  <contributor role="author" last-active="2.6">David Gowers</contributor>
-  <contributor role="author" last-active="2.0">Cameron Gregory</contributor>
+  <contributor role="author" last-active="2.8">Saul Goode</contributor>
+  <contributor role="author" last-active="2.8">David Gowers</contributor>
+  <contributor role="author" last-active="2.8">Cameron Gregory</contributor>
   <contributor role="author" last-active="2.8">Eric Grivel</contributor>
   <contributor role="author" last-active="2.8">Stephen Griffiths</contributor>
   <contributor role="author" last-active="1.2">Pavel Grinfeld</contributor>
@@ -211,7 +211,7 @@
   <contributor role="author" last-active="2.8">Benjamin Otte</contributor>
   <contributor role="author" last-active="1.0">Alan Paeth</contributor>
   <contributor role="author" last-active="1.2">Jay Painter</contributor>
-  <contributor role="artist author" last-active="2.6">Ville Pätsi</contributor>
+  <contributor role="artist author" last-active="2.8">Ville Pätsi</contributor>
   <contributor role="author" last-active="2.8">Akkana Peck</contributor>
   <contributor role="documenter" last-active="2.6">Pierre Perrier</contributor>
   <contributor role="author" last-active="2.0">Asbjorn Pettersen</contributor>
@@ -248,9 +248,9 @@
   <contributor role="author" last-active="1.2">Aaron Sherman</contributor>
   <contributor role="author" last-active="2.8">SHIRAKAWA Akira</contributor>
   <contributor role="documenter" last-active="2.4">Nickolay V. Shmyrev</contributor>
-  <contributor role="author" last-active="2.6">Jernej Simončič</contributor>
+  <contributor role="author" last-active="2.8">Jernej Simončič</contributor>
   <contributor role="author" last-active="2.8">Manish Singh</contributor>
-  <contributor role="author" last-active="2.4">Mukund Sivaraman</contributor>
+  <contributor role="author" last-active="2.8">Mukund Sivaraman</contributor>
   <contributor role="author" last-active="2.6">William Skaggs</contributor>
   <contributor role="author" last-active="1.0">Daniel Skarda</contributor>
   <contributor role="author" last-active="2.4">Kevin Sookocheff</contributor>