diff --git a/hooks/session-start.sh b/hooks/session-start.sh
index 016061b..31a9bcf 100644
--- a/hooks/session-start.sh
+++ b/hooks/session-start.sh
@@ -182,7 +182,7 @@ printf "│  📦 v%-45s│\n" "$CONFIG_VERSION"
 # Version check: compare local vs remote (non-blocking)
 _remote_ver=""
 if [ -n "$REPO_DIR" ] && [ -d "$REPO_DIR/.git" ]; then
-  _remote_ver=$(cd "$REPO_DIR" 2>/dev/null && git fetch origin --quiet 2>/dev/null && git show origin/master:version.txt 2>/dev/null) || _remote_ver=""
+  _remote_ver=$(cd "$REPO_DIR" 2>/dev/null && git fetch origin --quiet 2>/dev/null && git show origin/main:version.txt 2>/dev/null) || _remote_ver=""
 fi
 if [ -n "$_remote_ver" ] && [ "$_remote_ver" != "$CONFIG_VERSION" ]; then
   printf "│  🔄 update available: v%-27s│\n" "$_remote_ver"