diff --git a/CHANGELOG.md b/CHANGELOG.md
index bda92745a..0d8510c93 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,11 @@
 
 ## Unreleased
 
-Changes for library users since `0.6.3`.
+Changes for library users since `0.6.5`.
+
+## [0.6.5][0.6.5]
+
+Changes for library users since `0.6.4`.
 
 ### Fixed
 
@@ -11,6 +15,16 @@ Changes for library users since `0.6.3`.
   `BigInteger(int, byte[], int, int)`, which Android has only since API 33.
   The failure killed the app when the server sent its host keys after login.
 
+## [0.6.4][0.6.4]
+
+Changes for library users since `0.6.3`.
+
+### Changed
+
+- Expanded Diffie-Hellman group-exchange diagnostics with requested and received
+  group sizes, and promoted group-validation and client-key-generation timing
+  logs to INFO to help diagnose slow handshakes.
+
 ## [0.6.3][0.6.3]
 
 Changes for library users since `0.6.2`.
@@ -277,6 +291,8 @@ Changes for library users since `0.2.1`.
 - Limited zlib decompression output per packet to reduce decompression-bomb
   denial-of-service risk.
 
+[0.6.5]: https://github.com/connectbot/cbssh/compare/v0.6.4...v0.6.5
+[0.6.4]: https://github.com/connectbot/cbssh/compare/v0.6.3...v0.6.4
 [0.6.3]: https://github.com/connectbot/cbssh/compare/v0.6.2...v0.6.3
 [0.6.2]: https://github.com/connectbot/cbssh/compare/v0.6.1...v0.6.2
 [0.6.1]: https://github.com/connectbot/cbssh/compare/v0.6.0...v0.6.1
diff --git a/gradle.properties b/gradle.properties
index 41fd02396..e4cd12755 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -5,4 +5,4 @@ org.gradle.configuration-cache=false
 #org.gradle.configuration-cache.parallel=true
 
 group=org.connectbot.sshlib
-version=0.6.5-SNAPSHOT
+version=0.6.6-SNAPSHOT