diff --git a/configure.ac b/configure.ac
index 7b9592e..d84086a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -34,9 +34,9 @@ AC_CONFIG_MACRO_DIR([m4])
 # Interfaces changed/added/removed:   CURRENT++       REVISION=0
 # Interfaces added:                             AGE++
 # Interfaces removed:                           AGE=0
-AC_SUBST([LT_CURRENT], 3)
-AC_SUBST([LT_REVISION], 3)
-AC_SUBST([LT_AGE], 2)
+AC_SUBST([LT_CURRENT], 4)
+AC_SUBST([LT_REVISION], 0)
+AC_SUBST([LT_AGE], 3)
 
 AM_INIT_AUTOMAKE([-Wall -Werror foreign])
 AM_SILENT_RULES([yes])