diff --git a/library/Rebase/Contravariant/Extras.hs b/library/Rebase/Contravariant/Extras.hs
deleted file mode 100644
--- a/library/Rebase/Contravariant/Extras.hs
+++ /dev/null
@@ -1,7 +0,0 @@
-module Rebase.Contravariant.Extras
-(
-  module Contravariant.Extras
-)
-where
-
-import Contravariant.Extras
diff --git a/library/Rebase/Data/Time/Clock/System.hs b/library/Rebase/Data/Time/Clock/System.hs
new file mode 100644
--- /dev/null
+++ b/library/Rebase/Data/Time/Clock/System.hs
@@ -0,0 +1,7 @@
+module Rebase.Data.Time.Clock.System
+(
+  module Data.Time.Clock.System
+)
+where
+
+import Data.Time.Clock.System
diff --git a/library/Rebase/Prelude.hs b/library/Rebase/Prelude.hs
--- a/library/Rebase/Prelude.hs
+++ b/library/Rebase/Prelude.hs
@@ -111,10 +111,6 @@
 import Rebase.Data.Functor.Contravariant as Exports
 import Rebase.Data.Functor.Contravariant.Divisible as Exports
 
--- contravariant-extras
--------------------------
-import Rebase.Contravariant.Extras as Exports
-
 -- semigroups
 -------------------------
 import Rebase.Data.List.NonEmpty as Exports (NonEmpty)
@@ -227,6 +223,7 @@
 -------------------------
 import Rebase.Data.Time as Exports
 import Rebase.Data.Time.Clock.POSIX as Exports
+import Rebase.Data.Time.Clock.System as Exports
 
 -- hashable-time
 -------------------------
diff --git a/rebase.cabal b/rebase.cabal
--- a/rebase.cabal
+++ b/rebase.cabal
@@ -1,5 +1,5 @@
 name: rebase
-version: 1.10.0.1
+version: 1.11
 synopsis: A more progressive alternative to the "base" package
 description:
   This package is intended for those who are tired of keeping
@@ -38,7 +38,6 @@
   default-extensions: NoImplicitPrelude, NoMonomorphismRestriction
   default-language: Haskell2010
   exposed-modules:
-    Rebase.Contravariant.Extras
     Rebase.Control.Applicative
     Rebase.Control.Applicative.Backwards
     Rebase.Control.Applicative.Lift
@@ -268,6 +267,7 @@
     Rebase.Data.Time.Calendar.WeekDate
     Rebase.Data.Time.Clock
     Rebase.Data.Time.Clock.POSIX
+    Rebase.Data.Time.Clock.System
     Rebase.Data.Time.Clock.TAI
     Rebase.Data.Time.Format
     Rebase.Data.Time.LocalTime
@@ -424,27 +424,26 @@
   build-depends:
     base >=4.10 && <5,
     bifunctors >=5.5 && <5.6,
-    bytestring >=0.10 && <0.11,
+    bytestring >=0.10 && <0.12,
     containers >=0.6 && <0.7,
     contravariant >=1.5 && <1.6,
-    contravariant-extras >=0.3 && <0.4,
     comonad >=5 && <5.1,
     deepseq >=1.4 && <1.5,
-    dlist >=1 && <2,
+    dlist >=0.8 && <1.1,
     either >=5 && <5.1,
     hashable >=1.3 && <1.4,
     hashable-time >=0.2.0.2 && <0.3,
     mtl >=2.2 && <2.3,
-    profunctors >=5.5.2 && <5.7,
+    profunctors >=5.6 && <5.7,
     scientific >=0.3 && <0.4,
     selective >=0.4 && <0.5,
     semigroupoids >=5.3 && <5.4,
     stm >=2.5 && <2.6,
     text >=1.2 && <1.3,
-    time >=1.9 && <1.10,
+    time >=1.9 && <1.12,
     transformers >=0.5 && <0.6,
     unordered-containers >=0.2.13 && <0.3,
     uuid >=1.3 && <1.4,
     vector >=0.12 && <0.13,
-    vector-instances >=3.4 && <4,
+    vector-instances >=3.4 && <3.5,
     void >=0.7 && <0.8