diff --git a/stack.yaml b/stack.yaml
index 4c54c4a..3aac861 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -14,8 +14,10 @@ packages:
 - tensorflow-test
 
 extra-deps:
-- snappy-framing-0.1.2
+- c2hs-0.28.8
+- language-c-0.9.2
 - snappy-0.2.0.2
+- snappy-framing-0.1.2
 
 # For Mac OS X, whose linker doesn't use this path by default
 # unless you run `xcode-select --install`.