diff --git a/bank-holidays-england.cabal b/bank-holidays-england.cabal
--- a/bank-holidays-england.cabal
+++ b/bank-holidays-england.cabal
@@ -1,5 +1,5 @@
 name:                bank-holidays-england
-version:             0.2.0.10
+version:             0.2.0.11
 synopsis:            Calculation of bank holidays in England and Wales
 description:
   Calculation of bank holidays in England and Wales, using the rules that have
@@ -15,11 +15,12 @@
 category:            Data
 build-type:          Simple
 cabal-version:       >=1.10
+tested-with:         GHC ==8.10.7 || ==9.4.8 || ==9.8.2 || ==9.10.1
 
 library
   exposed-modules:     Data.Time.Calendar.BankHoliday.EnglandAndWales
   build-depends:       base >= 4.8 && < 5
-                     , time >= 1.5.0 && < 1.13
+                     , time >= 1.5.0 && < 1.15
                      , containers >= 0.5.0 && < 0.8
   hs-source-dirs:      src
   ghc-options: -Wall
@@ -31,6 +32,7 @@
   hs-source-dirs: test
   default-language:    Haskell2010
   ghc-options: -Wall
+  build-tool-depends:  hspec-discover:hspec-discover
   build-depends:       base >= 4.7 && < 5
                , bank-holidays-england
                , QuickCheck
diff --git a/src/Data/Time/Calendar/BankHoliday/EnglandAndWales.hs b/src/Data/Time/Calendar/BankHoliday/EnglandAndWales.hs
--- a/src/Data/Time/Calendar/BankHoliday/EnglandAndWales.hs
+++ b/src/Data/Time/Calendar/BankHoliday/EnglandAndWales.hs
@@ -93,8 +93,13 @@
     4 {- Sun -} -> [dec 26, dec 27]
     _           -> [dec 25, dec 26]
 
-  [jan, may, jun, sep, dec] = map (fromGregorian yy)
-    [1,   5,   6,   9,  12]
+  (jan, may, jun, sep, dec) =
+    ( fromGregorian yy 1
+    , fromGregorian yy 5
+    , fromGregorian yy 6
+    , fromGregorian yy 9
+    , fromGregorian yy 12
+    )
 
   firstMondayIn mm = addDays (negate $ wd mm 02) (mm 07)