diff --git a/configure.ac b/configure.ac
index 57afeaaefd..224181a341 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,7 +9,7 @@ dnl not sure exactly what the minimum version is (but 2.13 wont work)
 AC_PREREQ(2.57)
 
 dnl Set the BOINC version here.  You can also use the set-version script.
-AC_INIT(BOINC, 5.3.20)
+AC_INIT(BOINC, 5.3.21)
 
 AC_ARG_ENABLE(debug, 
     AS_HELP_STRING([--enable-debug],
diff --git a/version.h b/version.h
index 737cc18e60..bb4f62eb41 100644
--- a/version.h
+++ b/version.h
@@ -10,10 +10,10 @@
 #define BOINC_MINOR_VERSION 3
 
 /* Release part of BOINC version number */
-#define BOINC_RELEASE 20
+#define BOINC_RELEASE 21
 
 /* String representation of BOINC version number */
-#define BOINC_VERSION_STRING "5.3.20"
+#define BOINC_VERSION_STRING "5.3.21"
 
 #if (defined(_WIN32) || defined(__APPLE__))
 /* Name of package */
@@ -26,13 +26,13 @@
 #define PACKAGE_NAME "BOINC"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "BOINC 5.3.20"
+#define PACKAGE_STRING "BOINC 5.3.21"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "boinc"
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "5.3.20"
+#define PACKAGE_VERSION "5.3.21"
 
 #endif /* #if (defined(_WIN32) || defined(__APPLE__)) */