1 files changed, 3 insertions, 0 deletions
diff --git a/README b/README
index 6b2078e5..396c8bb2 100644
--- a/README
+++ b/README
@@ -77,6 +77,9 @@ For basic functionality and the C tools:
 - Berkeley DB 'db_dump' and 'db_load' utilities
   (db4-utils or db4.X-util or similar) (optional)
 
+- systemtap/DTrace userspace probes (optional)
+  http://sourceware.org/systemtap/wiki/AddingUserSpaceProbingToApps
+
 - perldoc (pod2man, pod2text, pod2html) to generate the manual pages
   and other documentation.