diff --git a/codeworld-api.cabal b/codeworld-api.cabal
--- a/codeworld-api.cabal
+++ b/codeworld-api.cabal
@@ -1,5 +1,5 @@
 Name:                codeworld-api
-Version:             0.8.0
+Version:             0.8.1
 Synopsis:            Graphics library for CodeWorld
 License:             Apache
 License-file:        LICENSE
@@ -58,10 +58,10 @@
                        ghc-prim             >= 0.3.1 && < 0.10,
                        hashable             >= 1.2.4 && < 1.5,
                        monad-loops          >= 0.3   && < 0.5,
-                       mtl                  >= 2.2.1 && < 2.3,
+                       mtl                  >= 2.2.1 && < 2.4,
                        random               >= 1.1   && < 1.3,
                        ref-tf               >= 0.4   && < 0.6,
-                       reflex               >= 0.6.3 && < 0.9,
+                       reflex               >= 0.6.3 && < 0.10,
                        template-haskell     >= 2.8   && < 2.20,
                        text                 >= 1.2.2 && < 2.1,
                        time                 >= 1.8   && < 2.0,
@@ -119,10 +119,10 @@
                        ghc-prim             >= 0.3.1 && < 0.10,
                        hashable             >= 1.2.4 && < 1.5,
                        monad-loops          >= 0.3   && < 0.5,
-                       mtl                  >= 2.2.1 && < 2.3,
+                       mtl                  >= 2.2.1 && < 2.4,
                        random               >= 1.1   && < 1.3,
                        ref-tf               >= 0.4   && < 0.6,
-                       reflex               >= 0.6.3 && < 0.9,
+                       reflex               >= 0.6.3 && < 0.10,
                        template-haskell     >= 2.8   && < 2.20,
                        text                 >= 1.2.2 && < 2.1,
                        time                 >= 1.8   && < 2.0,