diff --git a/build/shared/revisions.txt b/build/shared/revisions.txt
index 524f3e35d..1b68061d3 100644
--- a/build/shared/revisions.txt
+++ b/build/shared/revisions.txt
@@ -17,6 +17,13 @@ ARDUINO 1.5.6 BETA
 * Optimized Print::print(String&) method, now uses internal string buffer to perform block write
 * Improved portability of String class (maniacbug) #695
 
+ARDUINO 1.5.5-r2 BETA 2014.01.10
+
+* Signed drivers for Windows 8.1
+* Fixed Windows drivers signature (that prevented installation on
+  some Windows 8.x OS). Now the signature is timestamped and should
+  not expire.
+
 ARDUINO 1.5.5 BETA 2013.11.28
 
 NOTICE:
@@ -202,6 +209,13 @@ ARDUINO 1.5 BETA - 2012.10.22
 * For more info refer to this press release:
   http://arduino.cc/blog/2012/10/22/arduino-1-5-support-for-the-due-and-other-processors-easier-library-installation-simplified-board-menu-etc/
 
+ARDUINO 1.0.5-r2 - 2014.01.08
+
+* Signed drivers for Windows 8.1
+* Fixed Windows drivers signature (that prevented installation on
+  some Windows 8.x OS). Now the signature is timestamped and should
+  not expire.
+
 ARDUINO 1.0.5 - 2013.05.15
 
 [core]
diff --git a/build/windows/dist/drivers/arduino.cat b/build/windows/dist/drivers/arduino.cat
index 36b9dae5a..228c7104f 100644
Binary files a/build/windows/dist/drivers/arduino.cat and b/build/windows/dist/drivers/arduino.cat differ
diff --git a/build/windows/dist/drivers/arduino.inf b/build/windows/dist/drivers/arduino.inf
index e9926fcfd..1bb76ede1 100644
--- a/build/windows/dist/drivers/arduino.inf
+++ b/build/windows/dist/drivers/arduino.inf
@@ -39,7 +39,7 @@ Signature="$Windows NT$"
 Provider=%ManufacturerName%
 DriverPackageDisplayName=%DriverPackageDisplayName%
 CatalogFile=arduino.cat
-DriverVer=01/01/2013,1.0.0.0
+DriverVer=01/04/2013,1.0.0.0
 
 [Manufacturer]
 %ManufacturerName%=DeviceList, NTamd64, NTia64