diff --git a/README.rst b/README.rst
index 514315f03eb5a3287946f432a53fc6dbee36fa1a..bc4d199451e6320418b6ba20061949059e23532a 100644
--- a/README.rst
+++ b/README.rst
@@ -52,7 +52,7 @@ Build from git
 
 .. code-block:: text
 
-   $ git clone --depth 1 -b quic-draft-14 https://github.com/tatsuhiro-t/openssl
+   $ git clone --depth 1 -b quic-draft-15 https://github.com/tatsuhiro-t/openssl
    $ cd openssl
    $ # For Linux
    $ ./config enable-tls1_3 --prefix=$PWD/build
diff --git a/ci/build_openssl.sh b/ci/build_openssl.sh
index 9a0a9d60c9dcb457d61fb3f9264e4eb5612e33ec..47bfa8d57414abd7bbcd7885b851060ff252290b 100755
--- a/ci/build_openssl.sh
+++ b/ci/build_openssl.sh
@@ -2,7 +2,7 @@
 #build last openssl master (for Travis)
 
 cd ..
-git clone --depth 1 -b quic-draft-14 https://github.com/tatsuhiro-t/openssl
+git clone --depth 1 -b quic-draft-15 https://github.com/tatsuhiro-t/openssl
 cd openssl
 ./config enable-tls1_3 --prefix=$PWD/build
 make -j$(nproc)