diff --git a/cabal.project b/cabal.project
index 955bbcbdf..7c9321856 100644
--- a/cabal.project
+++ b/cabal.project
@@ -82,6 +82,8 @@ constraints:
   , quickcheck-state-machine ^>= 0.10
   -- Earlier versions do not compile with ghc-9.10.
   , os-string >= 2.0.2.1
+  -- Earlier versions do not compile with ghc-9.10.
+  , filepath >= 1.5.0.0
 
 -- ---------------------------------------------------------