diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc84246..971d5f8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.3.9 (December 9, 2021)
+
+* Fix hang related to new `max_send_buffer_size`.
+
 # 0.3.8 (December 8, 2021)
 
 * Add "extended CONNECT support". Adds `h2::ext::Protocol`, which is used for request and response extensions to connect new protocols over an HTTP/2 stream.
diff --git a/Cargo.toml b/Cargo.toml
index a923502..680c74f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ name = "h2"
 #   - html_root_url.
 # - Update CHANGELOG.md.
 # - Create git tag
-version = "0.3.8"
+version = "0.3.9"
 license = "MIT"
 authors = [
   "Carl Lerche <me@carllerche.com>",
diff --git a/src/lib.rs b/src/lib.rs
index d407341..cd07f3e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -78,7 +78,7 @@
 //! [`server::handshake`]: server/fn.handshake.html
 //! [`client::handshake`]: client/fn.handshake.html
 
-#![doc(html_root_url = "https://docs.rs/h2/0.3.8")]
+#![doc(html_root_url = "https://docs.rs/h2/0.3.9")]
 #![deny(missing_debug_implementations, missing_docs)]
 #![cfg_attr(test, deny(warnings))]