diff --git a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/make.defaults b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/make.defaults
index 283456db38..591b474c89 100644
--- a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/make.defaults
+++ b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/make.defaults
@@ -17,9 +17,9 @@ USE="${USE} cros_host expat -cracklib -introspection -cups -tcpd -berkdb"
 USE="${USE} python_single_target_python2_7 -python_single_target_python3_6"
 USE="${USE} python_targets_python2_7 python_targets_python3_6"
 
-# Disable Python 3 while building the SDK until we transition off Python 2.
+# Continue using Python 2 as the default version, but build Python 3 in SDK too.
 BOOTSTRAP_USE="${BOOTSTRAP_USE} python_single_target_python2_7 -python_single_target_python3_6"
-BOOTSTRAP_USE="${BOOTSTRAP_USE} python_targets_python2_7 -python_targets_python3_6"
+BOOTSTRAP_USE="${BOOTSTRAP_USE} python_targets_python2_7 python_targets_python3_6"
 
 # Never install cron or cron jobs
 USE="${USE} -cron"