diff --git a/quickcheck-string-random.cabal b/quickcheck-string-random.cabal
--- a/quickcheck-string-random.cabal
+++ b/quickcheck-string-random.cabal
@@ -1,59 +1,50 @@
 cabal-version: 1.12
-
--- This file has been generated from package.yaml by hpack version 0.31.2.
---
--- see: https://github.com/sol/hpack
---
--- hash: e0229b4b01f33339f7df24b4d64512ea9cb69d93bb982efd7d1ae632f3e86da2
+name:          quickcheck-string-random
+version:       0.1.4.0
+synopsis:      Helper to build generators with Text.StringRandom
+description:
+  Define a generator of Text that matches regular
+  expressions. This package is useful for creating Arbitrary
+  instances of Text type restricted by newtype.
 
-name:           quickcheck-string-random
-version:        0.1.3.0
-synopsis:       Helper to build generators with Text.StringRandom
-description:    Define a generator of Text that matches regular
-                expressions. This package is useful for creating Arbitrary
-                instances of Text type restricted by newtype.
-category:       Test
-homepage:       https://github.com/hiratara/hs-string-random#readme
-bug-reports:    https://github.com/hiratara/hs-string-random/issues
-author:         Masahiro Honma
-maintainer:     hiratara@cpan.org
-copyright:      Copyright (C) 2016- hiratara
-license:        BSD3
-license-file:   LICENSE
-tested-with:    GHC==8.0.1
-build-type:     Simple
+category:      Test
+homepage:      https://github.com/hiratara/hs-string-random#readme
+bug-reports:   https://github.com/hiratara/hs-string-random/issues
+author:        Masahiro Honma
+maintainer:    hiratara@cpan.org
+copyright:     Copyright (C) 2016- hiratara
+license:       BSD3
+license-file:  LICENSE
+tested-with:   GHC ==8.10.3
+build-type:    Simple
 
 source-repository head
-  type: git
+  type:     git
   location: https://github.com/hiratara/hs-string-random
 
 library
-  exposed-modules:
-      Test.QuickCheck.StringRandom
-  other-modules:
-      Paths_quickcheck_string_random
-  hs-source-dirs:
-      src
+  -- cabal-fmt: expand src
+  exposed-modules:  Test.QuickCheck.StringRandom
+  hs-source-dirs:   src
   build-depends:
-      QuickCheck >=2.8.2 && <2.14
-    , base >=4.9 && <5
-    , string-random ==0.1.*
-    , text >=1.2.2.1 && <1.3
+      base           >=4.9     && <5
+    , QuickCheck     >=2.8.2   && <2.15
+    , string-random  >=0.1     && <0.2
+    , text           >=1.2.2.1 && <1.3
+
   default-language: Haskell2010
 
 test-suite quickcheck-string-random-test
-  type: exitcode-stdio-1.0
-  main-is: quickcheck-string-random-test.hs
-  other-modules:
-      Paths_quickcheck_string_random
-  hs-source-dirs:
-      test
-  ghc-options: -threaded -rtsopts -with-rtsopts=-N
+  type:             exitcode-stdio-1.0
+  main-is:          quickcheck-string-random-test.hs
+  hs-source-dirs:   test
+  ghc-options:      -threaded -rtsopts -with-rtsopts=-N
   build-depends:
-      QuickCheck
-    , base
+      base
+    , QuickCheck
     , quickcheck-string-random
     , tasty
     , tasty-quickcheck
     , text
+
   default-language: Haskell2010
diff --git a/src/Test/QuickCheck/StringRandom.hs b/src/Test/QuickCheck/StringRandom.hs
--- a/src/Test/QuickCheck/StringRandom.hs
+++ b/src/Test/QuickCheck/StringRandom.hs
@@ -42,4 +42,4 @@
 -- | The 'matchRegexp pat' defines a generator that produces a text that
 -- | matches a regular expression 'pat'
 matchRegexp :: Text.Text -> QC.Gen Text.Text
-matchRegexp txt = QC.MkGen $ \(QC.QCGen g) _ -> StringRandom.stringRandom g txt
+matchRegexp txt = QC.MkGen $ \g _ -> StringRandom.stringRandom g txt