diff --git a/pyenv.d/install/latest.bash b/pyenv.d/install/latest.bash
index c04bc2f0..f33e365b 100644
--- a/pyenv.d/install/latest.bash
+++ b/pyenv.d/install/latest.bash
@@ -1,7 +1,13 @@
 DEFINITION_PREFIX="${DEFINITION%%:*}"
 DEFINITION_TYPE="${DEFINITION_PREFIX%%-*}" # TODO: support non-CPython versions
 if [[ "${DEFINITION}" != "${DEFINITION_PREFIX}" ]]; then
-  DEFINITION_CANDIDATES=($(python-build --definitions | grep -F "${DEFINITION_PREFIX}" | grep "^${DEFINITION_TYPE}" | sed -e '/-dev$/d' -e '/-src$/d' | sort -t. -k1,1r -k 2,2nr -k 3,3nr || true))
+  DEFINITION_CANDIDATES=\
+    ($(python-build --definitions | \
+      grep -F "${DEFINITION_PREFIX}" | \
+      grep "^${DEFINITION_TYPE}" | \
+      sed -E -e '/-dev$/d' -e '/-src$/d' -e '/(b|rc)[0-9]+$/d' | \
+      sort -t. -k1,1r -k 2,2nr -k 3,3nr \
+    || true))
   DEFINITION="${DEFINITION_CANDIDATES}"
   VERSION_NAME="${DEFINITION##*/}"
 fi