diff --git a/NEWS b/NEWS
index 3aa957e..6592f5a 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,8 @@
-0.13 - ******
+0.13 - 2019-10-21
+[Ko vd Sloot]
+* added JSON support.
+  The JSON syntax might change in the future, so handle with care.
+* lots of refactoring.
 
 0.12 - 2018-05-16
 [Ko van der Sloot]
diff --git a/configure.ac b/configure.ac
index 66326f6..9ee9052 100644
--- a/configure.ac
+++ b/configure.ac
@@ -63,7 +63,7 @@ PKG_CHECK_MODULES([ticcutils], [ticcutils >= 0.23] )
 CXXFLAGS="$CXXFLAGS $ticcutils_CFLAGS"
 LIBS="$LIBS $ticcutils_LIBS"
 
-PKG_CHECK_MODULES([timbl], [timbl >= 6.4.4] )
+PKG_CHECK_MODULES([timbl], [timbl >= 6.4.14] )
 CXXFLAGS="$CXXFLAGS $timbl_CFLAGS"
 LIBS="$LIBS $timbl_LIBS"