diff --git a/docs/TODO b/docs/TODO
index 0c3570176526..62affea011b3 100644
--- a/docs/TODO
+++ b/docs/TODO
@@ -182,6 +182,7 @@
  20.2 nicer lacking perl message
  20.3 more protocols supported
  20.4 more platforms supported
+ 20.5 write an SMB test server to replace impacket
  20.6 Use the RFC 6265 test suite
  20.8 Run web-platform-tests URL tests
 
@@ -1318,6 +1319,13 @@
  Make the test suite work on more platforms. OpenBSD and macOS. Remove
  fork()s and it should become even more portable.
 
+20.5 write an SMB test server to replace impacket
+
+ This would allow us to run SMB tests on more platforms and do better and more
+ covering tests.
+
+ See https://github.com/curl/curl/issues/15697
+
 20.6 Use the RFC 6265 test suite
 
  A test suite made for HTTP cookies (RFC 6265) by Adam Barth is available at