diff --git a/luacov-scm-1.rockspec b/luacov-scm-1.rockspec
index 6fa01d6..a8bf6d7 100644
--- a/luacov-scm-1.rockspec
+++ b/luacov-scm-1.rockspec
@@ -17,7 +17,8 @@ effectiveness of a test suite.
    license = "MIT"
 }
 dependencies = {
-   "lua >= 5.1"
+   "lua >= 5.1",
+   "datafile",
 }
 build = {
    type = "builtin",