diff --git a/stack.yaml b/stack.yaml
index 0a596b78..b3eb41d3 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -24,6 +24,7 @@ extra-deps:
 - persistent-sqlite-2.5
 - cookie-0.4.2
 - cryptonite-0.23
+- foundation-0.0.9
 
 - conduit-extra-1.1.14
 - streaming-commons-0.1.16