diff --git a/preamble.cabal b/preamble.cabal
--- a/preamble.cabal
+++ b/preamble.cabal
@@ -1,5 +1,5 @@
 name:                  preamble
-version:               0.0.28
+version:               0.0.29
 synopsis:              Yet another prelude.
 description:           A prelude built on basic-prelude.
 homepage:              https://github.com/swift-nav/preamble
diff --git a/src/Preamble/Types/Alias.hs b/src/Preamble/Types/Alias.hs
--- a/src/Preamble/Types/Alias.hs
+++ b/src/Preamble/Types/Alias.hs
@@ -10,6 +10,7 @@
 
 import Control.Monad.Catch
 import Control.Monad.Logger
+import Control.Monad.Random
 import Control.Monad.Trans.Control
 import Control.Monad.Trans.Resource
 import Data.Aeson
@@ -33,6 +34,7 @@
   ( MonadBaseControl IO m
   , MonadIO m
   , MonadMask m
+  , MonadRandom m
   )
 
 -- | MonadMain