diff --git a/lib/dune b/lib/dune
index 4b0f379..ec4f448 100644
--- a/lib/dune
+++ b/lib/dune
@@ -1,2 +1,3 @@
 (library
- (name dnstoy))
+ (name dnstoy)
+ (modules utils))
diff --git a/test/dune b/test/dune
index 8a81370..aad3592 100644
--- a/test/dune
+++ b/test/dune
@@ -1,2 +1,3 @@
 (test
- (name dnstoy))
+ (name dnstoy)
+ (libraries dnstoy))