diff --git a/README b/README
index a481619e..568be863 100644
--- a/README
+++ b/README
@@ -6,7 +6,7 @@ complicated build procedures or specific testing environments to get useful
 results.
 
 Thus, intel-graphics-tools was a project I started to collect some low-level
-tools I intended to build.  There are 3 subdirectories:
+tools I intended to build.
 
 benchmarks/
 	This should be a collection of useful microbenchmarks.  The hope is
@@ -32,3 +32,12 @@ tools/
 	people debugging the driver.
 
 	These tools generally must be run as root.
+
+debugger/
+	This tool is to be used to do shader debugging. It acts like a
+	debug server accepting connections from debug clients such as
+	mesa. The connections is made with unix domain sockets, and at some
+	point it would be nice if this directory contained a library for
+	initiating connections with debug clients..
+
+	The debugger must be run as root: "sudo debugger/eudb"