diff --git a/configure.ac b/configure.ac
index 12860744..4fd91d09 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,7 +18,7 @@ AC_SUBST(ISODATE)
 SODIUM_LIBRARY_VERSION_MAJOR=4
 SODIUM_LIBRARY_VERSION_MINOR=2
 DLL_VERSION=4
-SODIUM_LIBRARY_VERSION=6:0:2
+SODIUM_LIBRARY_VERSION=7:0:3
 #                      | | |
 #               +------+ | +---+
 #               |        |     |