diff --git a/checkin_notes b/checkin_notes
index 931d4d1901..9f355591c8 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -9931,3 +9931,11 @@ Rom    8 Jun 2011
     /
         configure.ac
         version.h
+
+Rom    8 Jun 2011
+    - Tag for 6.12.31 release, all platforms
+      boinc_core_release_6_12_31
+
+    /
+        configure.ac
+        version.h
diff --git a/configure.ac b/configure.ac
index e4734a6aa0..6990d4ffcd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,7 +6,7 @@ dnl not sure exactly what the minimum version is (but 2.13 wont work)
 AC_PREREQ(2.58)
 
 dnl Set the BOINC version here.  You can also use the set-version script.
-AC_INIT(BOINC, 6.12.30)
+AC_INIT(BOINC, 6.12.31)
 AC_CONFIG_MACRO_DIR([m4])
 LIBBOINC_VERSION=`echo ${PACKAGE_VERSION} | sed 's/\./:/g'`
 AC_SUBST([LIBBOINC_VERSION])
diff --git a/version.h b/version.h
index cf689f59ab..d6e8e8e22b 100644
--- a/version.h
+++ b/version.h
@@ -10,10 +10,10 @@
 #define BOINC_MINOR_VERSION 12
 
 /* Release part of BOINC version number */
-#define BOINC_RELEASE 30
+#define BOINC_RELEASE 31
 
 /* String representation of BOINC version number */
-#define BOINC_VERSION_STRING "6.12.30"
+#define BOINC_VERSION_STRING "6.12.31"
 
 /* Package is a pre-release (Alpha/Beta) package */
 /* #define BOINC_PRERELEASE 1 */
@@ -29,13 +29,13 @@
 #define PACKAGE_NAME "BOINC"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "BOINC 6.12.30"
+#define PACKAGE_STRING "BOINC 6.12.31"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "boinc"
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "6.12.30"
+#define PACKAGE_VERSION "6.12.31"
 
 #endif /* #if (defined(_WIN32) || defined(__APPLE__)) */