diff --git a/Version b/Version
index 5a12cd679ee456dca3a7e5ed030a68d60b9b4c30..21cb71af3a5c8d414c94b5210915c2083488cb44 100644
--- a/Version
+++ b/Version
@@ -14,9 +14,9 @@ Version SETA    Module_Version
 VString SETS    Module_MajorVersion
 Date    SETS    Module_Date      ; version for STB/NC OS
         |
-Version SETA    515
-VString SETS    "5.15"
-Date    SETS    "24 Apr 2009"    ; version for RISC OS on desktop computers
+Version SETA    517
+VString SETS    "5.17"
+Date    SETS    "19 Jan 2010"    ; version for RISC OS on desktop computers
 
                                  ; you may also wish to update the welcome
                                  ; and OS information dialogue box templates
diff --git a/VersionASM b/VersionASM
index e5b55f2349d4ebc7a5224bdb7feda74fcb81ecca..3d789ab167e12f39ac31e65ceed99d4adf883137 100644
--- a/VersionASM
+++ b/VersionASM
@@ -13,11 +13,11 @@
                         GBLS    Module_ComponentPath
 Module_MajorVersion     SETS    "5.35"
 Module_Version          SETA    535
-Module_MinorVersion     SETS    "4.79.2.98.2.19"
-Module_Date             SETS    "16 Jan 2010"
-Module_ApplicationDate  SETS    "16-Jan-10"
+Module_MinorVersion     SETS    "4.79.2.98.2.20"
+Module_Date             SETS    "19 Jan 2010"
+Module_ApplicationDate  SETS    "19-Jan-10"
 Module_ComponentName    SETS    "Kernel"
 Module_ComponentPath    SETS    "castle/RiscOS/Sources/Kernel"
-Module_FullVersion      SETS    "5.35 (4.79.2.98.2.19)"
-Module_HelpVersion      SETS    "5.35 (16 Jan 2010) 4.79.2.98.2.19"
+Module_FullVersion      SETS    "5.35 (4.79.2.98.2.20)"
+Module_HelpVersion      SETS    "5.35 (19 Jan 2010) 4.79.2.98.2.20"
                         END
diff --git a/VersionNum b/VersionNum
index 63a121d1f40e635c2029963ce096972470d9a20b..b9584e27733c78f7d3b1c38724e38313c9756d5d 100644
--- a/VersionNum
+++ b/VersionNum
@@ -5,19 +5,19 @@
  *
  */
 #define Module_MajorVersion_CMHG        5.35
-#define Module_MinorVersion_CMHG        4.79.2.98.2.19
-#define Module_Date_CMHG                16 Jan 2010
+#define Module_MinorVersion_CMHG        4.79.2.98.2.20
+#define Module_Date_CMHG                19 Jan 2010
 
 #define Module_MajorVersion             "5.35"
 #define Module_Version                  535
-#define Module_MinorVersion             "4.79.2.98.2.19"
-#define Module_Date                     "16 Jan 2010"
+#define Module_MinorVersion             "4.79.2.98.2.20"
+#define Module_Date                     "19 Jan 2010"
 
-#define Module_ApplicationDate          "16-Jan-10"
+#define Module_ApplicationDate          "19-Jan-10"
 
 #define Module_ComponentName            "Kernel"
 #define Module_ComponentPath            "castle/RiscOS/Sources/Kernel"
 
-#define Module_FullVersion              "5.35 (4.79.2.98.2.19)"
-#define Module_HelpVersion              "5.35 (16 Jan 2010) 4.79.2.98.2.19"
+#define Module_FullVersion              "5.35 (4.79.2.98.2.20)"
+#define Module_HelpVersion              "5.35 (19 Jan 2010) 4.79.2.98.2.20"
 #define Module_LibraryVersionInfo       "5:35"