diff --git a/NEWS b/NEWS
index 7494535..ffa5758 100644
--- a/NEWS
+++ b/NEWS
@@ -26,6 +26,9 @@ Changes from 1.3.7 to 1.4.0:
   - allow for customizing the way fragment lists are rendered using a callback API
   - new support for --msvc-syntax output using the new fragment rendering callbacks
   - fragments are now quoted according to POSIX literal rules
+  - new variables on the pkg-config builtin:
+    - ${pc_system_includedirs}: the system includedir search path known by pkgconf
+    - ${pc_system_libdirs}: the system libdir search path known by pkgconf
   - new manpages:
     - pc(5) describing pkgconf's interpretation of pkg-config .pc files
     - pkg.m4(7) describing the autotools macros bundled with pkgconf