diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@
 resolver: lts-14.8
 
 extra-deps:
-  - morpheus-graphql-0.9.0
+  - morpheus-graphql-0.9.1
 ```
 
 As Morpheus is quite new, make sure stack can find morpheus-graphql by running `stack upgrade` and `stack update`
diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## [0.9.1] - 02.01.2020
+
+- removed dependency `mtl`
+
 ## [0.9.0] - 02.01.2020
 
 ### Added
diff --git a/morpheus-graphql.cabal b/morpheus-graphql.cabal
--- a/morpheus-graphql.cabal
+++ b/morpheus-graphql.cabal
@@ -4,10 +4,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 334690ee72a44b0b477a859d7e0357b805cb23e1fa9e8695d71e7d34df4ecde4
+-- hash: 0d4240eb95d5effb0f31f87c698a24d51c363a7197319f37b50f29999209a999
 
 name:           morpheus-graphql
-version:        0.9.0
+version:        0.9.1
 synopsis:       Morpheus GraphQL
 description:    Build GraphQL APIs with your favourite functional language!
 category:       web, graphql
@@ -391,7 +391,6 @@
     , bytestring >=0.10.4 && <0.11
     , containers >=0.4.2.1 && <0.7
     , megaparsec >=7.0.0 && <9.0.0
-    , mtl >=2.0 && <=2.3
     , scientific >=0.3.6.2 && <0.4
     , template-haskell >=2.0 && <=2.16
     , text >=1.2.3.0 && <1.3
@@ -432,7 +431,6 @@
     , containers >=0.4.2.1 && <0.7
     , megaparsec >=7.0.0 && <9.0.0
     , morpheus-graphql
-    , mtl >=2.0 && <=2.3
     , scientific >=0.3.6.2 && <0.4
     , tasty
     , tasty-hunit