diff --git a/src/main.zig b/src/main.zig
index 32de9ca..f126d22 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -129,6 +129,7 @@ fn registerLuaFunctions() void {
     }
     if (build_opts.outline) {
         registerFunction("OutlineCommand", @intFromPtr(&outline.outlineCommand));
+        registerFunction("OutlineSyncTarget", @intFromPtr(&outline.outlineSyncTarget));
         registerFunction("OutlineDebug", @intFromPtr(&outline.outlineDebug));
     }
     if (build_opts.logsessions) {