diff --git a/README.rst b/README.rst
index c242398eae399aed4fca0b27ec4a3f065b49d07b..0f6574c29d2d0e7142aa07cf91da0416b4278aa6 100644
--- a/README.rst
+++ b/README.rst
@@ -52,7 +52,7 @@ Build from git
 
 .. code-block:: text
 
-   $ git clone --depth 1 https://github.com/openssl/openssl
+   $ git clone -b tlsv1.3-28 --depth 1 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 edcde43fb1d2c3d5ff56184795bf7fcb9e869b90..88e73a86df2043f546961ec8f004522308750e1c 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 https://github.com/openssl/openssl
+git clone -b tlsv1.3-28 --depth 1 https://github.com/tatsuhiro-t/openssl
 cd openssl
 ./config enable-tls1_3 --prefix=$PWD/build
 make -j$(nproc)