Index: b/ekg-core.cabal
===================================================================
--- a/ekg-core.cabal
+++ b/ekg-core.cabal
@@ -33,8 +33,8 @@ library
 
   build-depends:
     ghc-prim < 0.6,
-    base >= 4.5 && < 4.11,
-    containers >= 0.5 && < 0.6,
+    base >= 4.5 && < 4.12,
+    containers >= 0.5 && < 0.7,
     text < 1.3,
     unordered-containers < 0.3
 
