diff --git a/gcc/f/version.c b/gcc/f/version.c
index cbe71f9a1836411e001bda2aa00b309a367061e4..073c83cb78a1eb7874f9f573f0c62ead5fcde24a 100644
--- a/gcc/f/version.c
+++ b/gcc/f/version.c
@@ -1 +1 @@
-const char *ffe_version_string = "0.5.27 20010830 (experimental)";
+const char *ffe_version_string = "0.5.27 20010831 (experimental)";
diff --git a/gcc/version.c b/gcc/version.c
index a5ac66cab238a753685d38cf388ac7207c956ead..f13c27923cbefb15d06981925c1be70591923b6e 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 20010830 (experimental)";
+const char *const version_string = "3.1 20010831 (experimental)";
diff --git a/libf2c/libF77/Version.c b/libf2c/libF77/Version.c
index db4bfd80d8be46d365738ae67a1f124b318d6fd0..d9f0e717a8fd87aa2e96fbe7df96dca8838419bd 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 20010830 (experimental)";
+char __G77_LIBF77_VERSION__[] = "0.5.27 20010831 (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 b7c671c3520440110be4d1e59e9b45beee297928..e95faa22519943fdacb8f375bbe2706039972604 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 20010830 (experimental)";
+char __G77_LIBI77_VERSION__[] = "0.5.27 20010831 (experimental)";
 
 /*
 2.01	$ format added
diff --git a/libf2c/libU77/Version.c b/libf2c/libU77/Version.c
index 5c404f99c6064a0da2b8c9a064f60956f488c6db..b2cc725b7813a0175235dc7020dff4691b9b8ed2 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 20010830 (experimental)";
+char __G77_LIBU77_VERSION__[] = "0.5.27 20010831 (experimental)";
 
 #include <stdio.h>
 
diff --git a/libstdc++-v3/include/bits/c++config b/libstdc++-v3/include/bits/c++config
index 3c8ad313c0787f01502ef77a99a0f3d6ac754f11..e2c95c27893e214280d57633dd7b4710e9a485dc 100644
--- a/libstdc++-v3/include/bits/c++config
+++ b/libstdc++-v3/include/bits/c++config
@@ -36,7 +36,7 @@
 #include <bits/limits.h>
 
 // The current version of the C++ library in compressed ISO date format.
-#define __GLIBCPP__ 20010830
+#define __GLIBCPP__ 20010831
 
 // This is necessary until GCC supports separate template
 // compilation.