diff --git a/Makefile b/Makefile
index fb57a28eb..c600ad98d 100644
--- a/Makefile
+++ b/Makefile
@@ -570,6 +570,7 @@ test: pkgtest functest \
 	$(call def-help,test, run default tests )
 
 travistest: $(call def-help,travistest, run tests similar to the most thorough travis tests)
+	stack clean
 	stack build --ghc-options=-Werror --test --haddock --no-haddock-deps hledger-lib
 	stack build --ghc-options=-Werror --test --haddock --no-haddock-deps hledger
 	stack build --ghc-options=-Werror --test --haddock --no-haddock-deps hledger-ui