diff --git a/gcc/f/version.c b/gcc/f/version.c
index 24a2f122451..477c7cece63 100644
--- a/gcc/f/version.c
+++ b/gcc/f/version.c
@@ -1,4 +1,4 @@
 #include "ansidecl.h"
 #include "f/version.h"
 
-const char *const ffe_version_string = "0.5.27 20011231 (experimental)";
+const char *const ffe_version_string = "0.5.27 20020101 (experimental)";
diff --git a/gcc/version.c b/gcc/version.c
index 459f700d534..e5cf09892ef 100644
--- a/gcc/version.c
+++ b/gcc/version.c
@@ -1,4 +1,4 @@
 #include "ansidecl.h"
 #include "version.h"
 
-const char *const version_string = "3.1 20011231 (experimental)";
+const char *const version_string = "3.1 20020101 (experimental)";
diff --git a/libf2c/libF77/Version.c b/libf2c/libF77/Version.c
index f8ac67de049..0bb7f9c9e09 100644
--- a/libf2c/libF77/Version.c
+++ b/libf2c/libF77/Version.c
@@ -3,7 +3,7 @@ static char junk[] = "\n@(#)LIBF77 VERSION 20000929\n";
 /*
 */
 
-char __G77_LIBF77_VERSION__[] = "0.5.27 20011231 (experimental)";
+char __G77_LIBF77_VERSION__[] = "0.5.27 20020101 (experimental)";
 
 /*
 2.00	11 June 1980.  File version.c added to library.
diff --git a/libf2c/libI77/Version.c b/libf2c/libI77/Version.c
index 50e3747355b..6ae3844f35c 100644
--- a/libf2c/libI77/Version.c
+++ b/libf2c/libI77/Version.c
@@ -3,7 +3,7 @@ static char junk[] = "\n@(#) LIBI77 VERSION pjw,dmg-mods 20001205\n";
 /*
 */
 
-char __G77_LIBI77_VERSION__[] = "0.5.27 20011231 (experimental)";
+char __G77_LIBI77_VERSION__[] = "0.5.27 20020101 (experimental)";
 
 /*
 2.01	$ format added
diff --git a/libf2c/libU77/Version.c b/libf2c/libU77/Version.c
index f49640f46b9..0b1f3224c95 100644
--- a/libf2c/libU77/Version.c
+++ b/libf2c/libU77/Version.c
@@ -1,6 +1,6 @@
 static char junk[] = "\n@(#) LIBU77 VERSION 19980709\n";
 
-char __G77_LIBU77_VERSION__[] = "0.5.27 20011231 (experimental)";
+char __G77_LIBU77_VERSION__[] = "0.5.27 20020101 (experimental)";
 
 #include <stdio.h>
 
diff --git a/libstdc++-v3/include/bits/c++config b/libstdc++-v3/include/bits/c++config
index 6d89819832f..ac10cfa97e1 100644
--- a/libstdc++-v3/include/bits/c++config
+++ b/libstdc++-v3/include/bits/c++config
@@ -34,7 +34,7 @@
 #include <bits/os_defines.h>
 
 // The current version of the C++ library in compressed ISO date format.
-#define __GLIBCPP__ 20011231
+#define __GLIBCPP__ 20020101
 
 // This is necessary until GCC supports separate template
 // compilation.