diff --git a/bin/pyenv-update b/bin/pyenv-update
index 1d64bfc..9ca9d47 100755
--- a/bin/pyenv-update
+++ b/bin/pyenv-update
@@ -15,7 +15,7 @@ verify_repo_remote() {
 }
 
 verify_repo_branch() {
-  local name="$(cd "$1" && git name-rev --name-only HEAD 2>/dev/null)"
+  local name="$(cd "$1" && git name-rev --refs='heads/*' --name-only HEAD 2>/dev/null)"
   [[ "${name}" == "${BRANCH}" ]]
 }