diff --git a/pandoc.cabal b/pandoc.cabal
index 114ac5227..7f55d1650 100644
--- a/pandoc.cabal
+++ b/pandoc.cabal
@@ -281,7 +281,8 @@ Library
                  deepseq-generics >= 0.1 && < 0.2,
                  JuicyPixels >= 3.1.6.1 && < 3.3,
                  filemanip >= 0.3 && < 0.4,
-                 cmark >= 0.4.0.1 && < 0.5
+                 cmark >= 0.4.0.1 && < 0.5,
+                 ghc-prim >= 0.2
   if flag(old-locale)
      Build-Depends: old-locale >= 1 && < 1.1,
                     time >= 1.2 && < 1.5