diff --git a/pandoc.cabal b/pandoc.cabal
index d90c5e4f0..13c089ba4 100644
--- a/pandoc.cabal
+++ b/pandoc.cabal
@@ -444,6 +444,7 @@ Executable make-reference-files
   Hs-Source-Dirs: data
   Build-Depends: zip-archive >= 0.2.3.4 && < 0.3,
                  base >= 4.2 && < 5,
+                 filepath >= 1.1 && < 1.5,
                  directory >= 1 && < 1.3,
                  bytestring >= 0.9 && < 0.11
   Default-Language: Haskell2010