diff --git a/spago.dhall b/spago.dhall
index bcbf5a6..1e4e079 100644
--- a/spago.dhall
+++ b/spago.dhall
@@ -1,6 +1,18 @@
 { name = "aff-coroutines"
 , dependencies =
-  [ "aff", "avar", "console", "coroutines", "effect", "psci-support" ]
+  [ "aff"
+  , "avar"
+  , "console"
+  , "coroutines"
+  , "effect"
+  , "either"
+  , "freet"
+  , "maybe"
+  , "newtype"
+  , "prelude"
+  , "psci-support"
+  , "transformers"
+  ]
 , packages = ./packages.dhall
 , sources = [ "src/**/*.purs", "test/**/*.purs" ]
 }