diff --git a/gcc/f/version.c b/gcc/f/version.c
index 6fe528ab1914e32b722c2664e9db9803cad5620f..6246df63a58bb3cec24f047a4f03f0082953940d 100644
--- a/gcc/f/version.c
+++ b/gcc/f/version.c
@@ -1 +1 @@
-const char *const ffe_version_string = "0.5.27 20010916 (experimental)";
+const char *const ffe_version_string = "0.5.27 20010917 (experimental)";
diff --git a/gcc/version.c b/gcc/version.c
index ec39e63850b31b06355c28be58061cf93d1b5583..c0a99ba6d434e0bf4256f72811979321953109b1 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 20010916 (experimental)";
+const char *const version_string = "3.1 20010917 (experimental)";
diff --git a/libf2c/libF77/Version.c b/libf2c/libF77/Version.c
index 31ec8e7bbf37510ed94f9c00913c9ecc4f6bb8ef..727462c8a195a17a790ae054778628928ed0e1e1 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 20010916 (experimental)";
+char __G77_LIBF77_VERSION__[] = "0.5.27 20010917 (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 f2c4950b53cc1997480577e3a0f3489f5ada7dfa..621dd7fcaf47e11ecdcf7e408772c60fd7753c63 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 20010916 (experimental)";
+char __G77_LIBI77_VERSION__[] = "0.5.27 20010917 (experimental)";
 
 /*
 2.01	$ format added
diff --git a/libf2c/libU77/Version.c b/libf2c/libU77/Version.c
index e70178ea70a4f9bb685cd89afeb07e241c467e29..9e78c22687cf3891ccbd5bbeb10ead26d4c6dc0a 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 20010916 (experimental)";
+char __G77_LIBU77_VERSION__[] = "0.5.27 20010917 (experimental)";
 
 #include <stdio.h>
 
diff --git a/libstdc++-v3/include/bits/c++config b/libstdc++-v3/include/bits/c++config
index ef8885fe249349ef854b3a2780a1bf423ccb37b0..60279b4f8f510b761e186ec4a372627409885b1c 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__ 20010916
+#define __GLIBCPP__ 20010917
 
 // This is necessary until GCC supports separate template
 // compilation.