diff --git a/im/app/application.ini b/im/app/application.ini
index 505f2994fc..178195d87a 100644
--- a/im/app/application.ini
+++ b/im/app/application.ini
@@ -13,7 +13,7 @@ SourceRepository=@MOZ_SOURCE_REPO@
 #ifdef MOZ_SOURCE_STAMP
 SourceStamp=@MOZ_SOURCE_STAMP@
 #endif
-Copyright=Copyright (c) 2007-2012 Contributors
+Copyright=Copyright (c) 2007-2013 Contributors
 ID={33cb9019-c295-46dd-be21-8c4936574bee}
 
 [Gecko]
diff --git a/im/app/macbuild/Contents/Info.plist.in b/im/app/macbuild/Contents/Info.plist.in
index 4752b61ff8..0b7c46a786 100644
--- a/im/app/macbuild/Contents/Info.plist.in
+++ b/im/app/macbuild/Contents/Info.plist.in
@@ -7,7 +7,7 @@
 	<key>CFBundleExecutable</key>
 	<string>instantbird-bin</string>
 	<key>CFBundleGetInfoString</key>
-	<string>%MAC_APP_NAME% %APP_VERSION%, © 1998-2012 Contributors</string>
+	<string>%MAC_APP_NAME% %APP_VERSION%, © 1998-2013 Contributors</string>
 	<key>CFBundleIconFile</key>
 	<string>instantbird</string>
 	<key>CFBundleIdentifier</key>
diff --git a/im/content/aboutDialog.xul b/im/content/aboutDialog.xul
index 366a7a348f..a622364209 100644
--- a/im/content/aboutDialog.xul
+++ b/im/content/aboutDialog.xul
@@ -14,7 +14,7 @@
 %brandDTD;
 <!ENTITY % aboutDialogDTD SYSTEM "chrome://instantbird/locale/aboutDialog.dtd" >
 %aboutDialogDTD;
-<!ENTITY copyrightYear "2012">
+<!ENTITY copyrightYear "2013">
 #ifdef XP_MACOSX
  <!ENTITY % instantbirdDTD SYSTEM "chrome://instantbird/locale/instantbird.dtd">
  %instantbirdDTD;
diff --git a/im/content/credits.xhtml b/im/content/credits.xhtml
index ff5cbb4f3c..6792747500 100644
--- a/im/content/credits.xhtml
+++ b/im/content/credits.xhtml
@@ -219,7 +219,7 @@
         <p id="gecko" class="center">&credit.poweredByGecko;</p>
 
         <p class="footnote">
-          &brandFullName; &license.part0; &copy;2007-2012 &license.part1;
+          &brandFullName; &license.part0; &copy;2007-2013 &license.part1;
           <a href="http://www.instantbird.com/thanks.html" onclick="openContributors(event);">&license.contrib;</a>,
           &license.part2;
           <a onclick="openDialog('about:license');">&credit.license;</a>