diff --git a/filtermail/CHANGELOG.md b/filtermail/CHANGELOG.md
index afafcafd..927801a9 100644
--- a/filtermail/CHANGELOG.md
+++ b/filtermail/CHANGELOG.md
@@ -1,3 +1,18 @@
+## 0.6.5 - 2026-05-12
+
+### Bug Fixes
+
+- *(smtp-client)* Handle 421 on reused connection (#145)
+- Advertise 8BITMIME to prevent conversion after DKIM signing (#149)
+- Validate mail data (#150)
+
+### Miscellaneous Tasks
+
+- Build and deploy relays with filtermail binary and run interop tests against madmail  (#131)
+
+### Performance
+
+- *(smtp-client)* Use pipelining if server advertises support (#146)
 ## 0.6.4 - 2026-05-01
 
 ### Bug Fixes
diff --git a/filtermail/Cargo.lock b/filtermail/Cargo.lock
index 0356122e..5a2b6d46 100644
--- a/filtermail/Cargo.lock
+++ b/filtermail/Cargo.lock
@@ -508,7 +508,7 @@ checksum = "28dea519a9695b9977216879a3ebfddf92f1c08c05d984f8996aecd6ecdc811d"
 
 [[package]]
 name = "filtermail"
-version = "0.6.4"
+version = "0.6.5"
 dependencies = [
  "async-trait",
  "base64",
diff --git a/filtermail/Cargo.toml b/filtermail/Cargo.toml
index a5b1b74c..aeed8746 100644
--- a/filtermail/Cargo.toml
+++ b/filtermail/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "filtermail"
-version = "0.6.4"
+version = "0.6.5"
 edition = "2024"
 license = "MIT"
 readme = "README.md"