diff --git a/ChangeLog b/ChangeLog
index ee2918967..096685b66 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,6 @@
 2010-06-22 Holger Vogt
  * b4soild.c: line 7598 double assignment of Cbg1 removed
+ * configure.in, /visaulc/include/config.h: version 21plus
 
 ============================ Rework-21 ==================================
 2010-06-20 Holger Vogt
diff --git a/configure.in b/configure.in
index cc60e004d..9bdf1a434 100644
--- a/configure.in
+++ b/configure.in
@@ -12,7 +12,7 @@ dnl Initialisation
 dnl ---------------
 
 dnl Initialisation of configure
-AC_INIT(ngspice,21,ngspice-bugs@lists.sourceforge.net)
+AC_INIT(ngspice,21plus,ngspice-bugs@lists.sourceforge.net)
 
 dnl Unique file in the source directory
 AC_CONFIG_SRCDIR([src/ngspice.c])
diff --git a/visualc/include/config.h b/visualc/include/config.h
index 387d8422c..f3a6ec8ab 100644
--- a/visualc/include/config.h
+++ b/visualc/include/config.h
@@ -472,13 +472,13 @@
 #define PACKAGE_NAME "ngspice"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "ngspice 21"
+#define PACKAGE_STRING "ngspice 21plus"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "ngspice"
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "21"
+#define PACKAGE_VERSION "21plus"
 
 /* Define if we want predictor algorithm */
 /* #undef PREDICTOR */