diff --git a/polysemy-chronos.cabal b/polysemy-chronos.cabal
--- a/polysemy-chronos.cabal
+++ b/polysemy-chronos.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           polysemy-chronos
-version:        0.1.2.0
+version:        0.1.2.1
 synopsis:       Polysemy effect for chronos
 description:    Please see the readme on Github at <https://github.com/tek/polysemy-time>
 category:       Time
@@ -89,20 +89,19 @@
       ViewPatterns
   ghc-options: -flate-specialise -fspecialise-aggressively -Wall -fplugin=Polysemy.Plugin
   build-depends:
-      aeson ==1.4.*
+      aeson >=1.4 && <1.6
     , base ==4.*
     , chronos >=1.1.1 && <1.2
     , containers
     , polysemy >=1.3 && <1.6
     , polysemy-plugin >=0.2.5
     , polysemy-time
+    , relude >=0.7 && <1.1
     , text
   mixins:
       base hiding (Prelude)
     , polysemy-time hiding (Polysemy.Time.Prelude)
     , polysemy-time (Polysemy.Time.Prelude as Prelude)
-  if impl(ghc < 8.10)
-    ghc-options: -O2
   default-language: Haskell2010
 
 test-suite polysemy-chronos-unit
@@ -173,7 +172,7 @@
       ViewPatterns
   ghc-options: -flate-specialise -fspecialise-aggressively -Wall -fplugin=Polysemy.Plugin -threaded -rtsopts -with-rtsopts=-N -fplugin=Polysemy.Plugin
   build-depends:
-      aeson ==1.4.*
+      aeson >=1.4 && <1.6
     , base ==4.*
     , chronos >=1.1.1 && <1.2
     , containers
@@ -183,6 +182,7 @@
     , polysemy-plugin
     , polysemy-test
     , polysemy-time
+    , relude >=0.7 && <1.1
     , tasty
     , tasty-hedgehog
     , text
@@ -190,6 +190,4 @@
       base hiding (Prelude)
     , polysemy-time hiding (Prelude)
     , polysemy-time (Polysemy.Time.Prelude as Prelude)
-  if impl(ghc < 8.10)
-    ghc-options: -O2
   default-language: Haskell2010