diff --git a/CHANGELOG.md b/CHANGELOG.md
index fbda9970..17f788c7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 ## Version History
 
+## Unreleased
+
+* Add CPython 3.5.3rc1
+
 ## 1.0.6
 
 * python-build: Add CPython 3.6.0 (#787)
diff --git a/plugins/python-build/share/python-build/3.5.3rc1 b/plugins/python-build/share/python-build/3.5.3rc1
new file mode 100644
index 00000000..c58b3dc0
--- /dev/null
+++ b/plugins/python-build/share/python-build/3.5.3rc1
@@ -0,0 +1,8 @@
+#require_gcc
+install_package "openssl-1.0.2g" "https://www.openssl.org/source/openssl-1.0.2g.tar.gz#b784b1b3907ce39abf4098702dade6365522a253ad1552e267a9a0e89594aa33" mac_openssl --if has_broken_mac_openssl
+install_package "readline-6.3" "https://ftpmirror.gnu.org/readline/readline-6.3.tar.gz#56ba6071b9462f980c5a72ab0023893b65ba6debb4eeb475d7a563dc65cafd43" standard --if has_broken_mac_readline
+if has_tar_xz_support; then
+  install_package "Python-3.5.3rc1" "https://www.python.org/ftp/python/3.5.3/Python-3.5.3rc1.tar.xz#7140482a99df2684333fa4c56d2381d1295a16c5672adfb42e963fe72aebc1ff" ldflags_dirs standard verify_py35 ensurepip
+else
+  install_package "Python-3.5.3rc1" "https://www.python.org/ftp/python/3.5.3/Python-3.5.3rc1.tgz#6d685edf75b272b342eb9af683227ea536f7a5fdf60bfdb2ce673e102658e3cf" ldflags_dirs standard verify_py35 ensurepip
+fi