diff --git a/docker/build_scripts/build_env.sh b/docker/build_scripts/build_env.sh
index 5253948da..5b113b045 100644
--- a/docker/build_scripts/build_env.sh
+++ b/docker/build_scripts/build_env.sh
@@ -1,7 +1,8 @@
 # source me
 
 PYTHON_DOWNLOAD_URL=https://www.python.org/ftp/python
-CPYTHON_VERSIONS="2.7.16 3.4.10 3.5.7 3.6.9 3.7.4 3.8.0rc1"
+# of the form <maj>.<min>.<rev> or <maj>.<min>.<rev>rc<n>
+CPYTHON_VERSIONS="2.7.16 3.4.10 3.5.7 3.6.9 3.7.4 3.8.0"
 
 # openssl version to build, with expected sha256 hash of .tar.gz
 # archive.