diff --git a/md-to-html.cabal b/md-to-html.cabal
index 06bdc52..cbcab70 100644
--- a/md-to-html.cabal
+++ b/md-to-html.cabal
@@ -58,7 +58,9 @@ library
    exposed-modules: MdToHTML
    other-modules: MdToHtmlTest
    build-depends:    base ^>=4.19.1.0,
-                      HUnit
+                      HUnit,
+                      megaparsec,
+                      text
 
 executable md-to-html-runner
     -- Import common warning flags.