diff --git a/ci/build/build-haproxy-dist.sh b/ci/build/build-haproxy-dist.sh
index 922a183..93143bb 100755
--- a/ci/build/build-haproxy-dist.sh
+++ b/ci/build/build-haproxy-dist.sh
@@ -28,7 +28,7 @@
 
 set -euo pipefail
 
-HAPROXY_VERSION="${HAPROXY_VERSION:-2.8.20}"
+HAPROXY_VERSION="${HAPROXY_VERSION:-2.8.21}"
 OPENSSL_VERSION="${OPENSSL_VERSION:-3.0.15}"
 LUA_VERSION="${LUA_VERSION:-5.4.7}"
 OUTPUT_DIR="${OUTPUT_DIR:-/tmp/haproxy-dist}"
diff --git a/pyproject.toml b/pyproject.toml
index d6c3b28..33d4f60 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "ray-haproxy"
-version = "2.8.20"
+version = "2.8.21"
 description = "HAProxy binary distribution for Ray Serve"
 readme = "README.rst"
 requires-python = ">=3.9"