diff --git a/libisoburn/trunk/configure.ac b/libisoburn/trunk/configure.ac
index 7fe93c87..ba527b05 100644
--- a/libisoburn/trunk/configure.ac
+++ b/libisoburn/trunk/configure.ac
@@ -202,7 +202,7 @@ AC_CHECK_HEADER(libisofs/libisofs.h)
 
 dnl Check for proper library versions
 LIBBURN_REQUIRED=0.7.0
-LIBISOFS_REQUIRED=0.6.22
+LIBISOFS_REQUIRED=0.6.23
 PKG_CHECK_MODULES(LIBBURN, libburn-1 >= $LIBBURN_REQUIRED)
 PKG_CHECK_MODULES(LIBISOFS, libisofs-1 >= $LIBISOFS_REQUIRED)