diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 104762d838d..dd6ae6e93ba 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2009-05-07  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* configure.ac: Bump libtool_VERSION to 6:12:0.
+	* configure: Regenerate.
+
 2009-05-07  Matthias Klose  <doko@ubuntu.com>
 
 	PR libstdc++/40038
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 31678ebf212..a80bbaecb43 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -1567,7 +1567,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 ### am handles this now?  ORIGINAL_LD_FOR_MULTILIBS=$LD
 
 # For libtool versioning info, format is CURRENT:REVISION:AGE
-libtool_VERSION=6:11:0
+libtool_VERSION=6:12:0
 
 
 # Find the rest of the source tree framework.
diff --git a/libstdc++-v3/configure.ac b/libstdc++-v3/configure.ac
index a07d9ff98f4..334e918e349 100644
--- a/libstdc++-v3/configure.ac
+++ b/libstdc++-v3/configure.ac
@@ -12,7 +12,7 @@ AC_CONFIG_HEADER(config.h)
 ### am handles this now?  ORIGINAL_LD_FOR_MULTILIBS=$LD
 
 # For libtool versioning info, format is CURRENT:REVISION:AGE
-libtool_VERSION=6:11:0
+libtool_VERSION=6:12:0
 AC_SUBST(libtool_VERSION)
 
 # Find the rest of the source tree framework.