diff --git a/language-python/language-python.cabal b/language-python/language-python.cabal
index 1ecde97..277b2d5 100644
--- a/language-python/language-python.cabal
+++ b/language-python/language-python.cabal
@@ -37,11 +37,11 @@ Library
    ghc-options: -fwarn-incomplete-patterns -fwarn-unused-imports -fwarn-warnings-deprecations
    build-depends:
       base >= 4.8 && < 5,
-      containers >= 0.5 && < 0.7,
+      containers >= 0.5 && < 0.9,
       pretty == 1.1.*,
       array >= 0.4 && < 0.6,
       transformers >= 0.3 && < 0.7,
-      monads-tf == 0.1.*,
+      monads-tf >= 0.1 && < 0.4,
       utf8-string >= 1 && < 2
    build-tools: happy, alex
    exposed-modules: