diff --git a/effect-stack.cabal b/effect-stack.cabal
--- a/effect-stack.cabal
+++ b/effect-stack.cabal
@@ -1,5 +1,5 @@
 name:                effect-stack
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            Reducing the pain of transformer stacks with duplicated effects
 description:         When using monad transformer stacks, it is common to want
                      to mix effects from various layers of the stack within a
@@ -73,8 +73,7 @@
                        TypeFamilies
   build-depends:
                        base >=4.12 && <4.13,
-                       transformers >=0.5 && <0.6,
-                       mtl
+                       transformers >=0.5 && <0.6
   -- hs-source-dirs:
   default-language:    Haskell2010
   ghc-options:         -fno-warn-tabs