diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e29de8cc..864afb19 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -114,7 +114,7 @@ jobs:
     - name: Build nghttp3
       if: matrix.http3 == 'http3'
       run: |
-        git clone https://github.com/ngtcp2/nghttp3
+        git clone --depth 1 -b v0.1.0 https://github.com/ngtcp2/nghttp3
         cd nghttp3
         autoreconf -i
         ./configure --prefix=$PWD/build --enable-lib-only
@@ -123,7 +123,7 @@ jobs:
     - name: Build ngtcp2
       if: matrix.http3 == 'http3'
       run: |
-        git clone https://github.com/ngtcp2/ngtcp2
+        git clone --depth 1 -b v0.1.0 https://github.com/ngtcp2/ngtcp2
         cd ngtcp2
         autoreconf -i
         ./configure --prefix=$PWD/build --enable-lib-only PKG_CONFIG_PATH="../openssl/build/lib/pkgconfig"
diff --git a/README.rst b/README.rst
index 14019c69..20f9aea9 100644
--- a/README.rst
+++ b/README.rst
@@ -366,7 +366,7 @@ Build nghttp3:
 
 .. code-block:: text
 
-   $ git clone --depth 1 https://github.com/ngtcp2/nghttp3
+   $ git clone --depth 1 -b v0.1.0 https://github.com/ngtcp2/nghttp3
    $ cd nghttp3
    $ autoreconf -i
    $ ./configure --prefix=$PWD/build --enable-lib-only
@@ -378,7 +378,7 @@ Build ngtcp2:
 
 .. code-block:: text
 
-   $ git clone --depth 1 https://github.com/ngtcp2/ngtcp2
+   $ git clone --depth 1 -b v0.1.0 https://github.com/ngtcp2/ngtcp2
    $ cd ngtcp2
    $ autoreconf -i
    $ ./configure --prefix=$PWD/build --enable-lib-only \