#19439: Update PCbuild/readme.txt with new sub-project
diff --git a/PCbuild/readme.txt b/PCbuild/readme.txt
index 883e3d3..3012971 100644
--- a/PCbuild/readme.txt
+++ b/PCbuild/readme.txt
@@ -110,6 +110,9 @@
 pywlauncher
     pyw.exe, a variant of py.exe that doesn't open a Command Prompt
     window
+_testembed
+    _testembed.exe, a small program that embeds Python for testing
+    purposes, used by test_capi.py
 
 These are miscellaneous sub-projects that don't really fit the other
 categories.  By default, these projects do not build in Debug