diff --git a/ROADMAP.md b/ROADMAP.md
index 4625c68..69c4a35 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -34,7 +34,7 @@
 
 ## v0.3.0
 
-- [ ] SOCKS5 server authentication (username/password)
+- [x] SOCKS5 server authentication (username/password)
 - [ ] UDP ASSOCIATE support (SOCKS5 UDP relay)
 - [ ] BIND support
 - [ ] Chain randomization (random order, random subset)
diff --git a/TASKS.md b/TASKS.md
index 41e94e9..ff7b334 100644
--- a/TASKS.md
+++ b/TASKS.md
@@ -69,4 +69,4 @@
 
 ## Next
 - [x] Integration tests with mock proxy server
-- [ ] SOCKS5 server-side authentication
+- [x] SOCKS5 server-side authentication
diff --git a/TODO.md b/TODO.md
index 4b101cc..4206489 100644
--- a/TODO.md
+++ b/TODO.md
@@ -17,7 +17,7 @@
 
 ## Security
 
-- Optional SOCKS5 server authentication
+- ~~Optional SOCKS5 server authentication~~ (done: fa36218)
 - Rate limiting per source IP
 - Access control lists