diff --git a/rockspecs/fennel-ls-scm-4.rockspec b/rockspecs/fennel-ls-scm-4.rockspec
index f877de4..2ca0d39 100644
--- a/rockspecs/fennel-ls-scm-4.rockspec
+++ b/rockspecs/fennel-ls-scm-4.rockspec
@@ -17,6 +17,7 @@ dependencies = {
 }
 build_dependencies = {
     "fennel == 1.4.2",
+    "luarocks-build-fennel",
 }
 test_dependencies = {
     "faith >= 0.1.2",