diff --git a/tests/Makefile.am b/tests/Makefile.am
index 3f10b402b4..e4b81d2897 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -31,4 +31,5 @@ EXTRA_DIST = $(TESTS) \
   dependencies.nix.in dependencies.builder*.sh \
   locking.nix.in locking.builder.sh \
   parallel.nix.in parallel.builder.sh \
-  build-hook.nix.in build-hook.hook.sh
\ No newline at end of file
+  build-hook.nix.in build-hook.hook.sh \
+  substitutes.nix.in substituter.nix.in substituter.builder.sh
\ No newline at end of file