diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog for doctest-driver-gen
 
+## 0.3.0.0
+
+* Update the template file (in `ddgen_output`) to consider to
+  `NoImplicitPrelude`.
+* Fix the build fail when GHC's version is less than 8.0.x.
+
 ## 0.2.0.4
 
 * Update `build-depends` to allow `base-4.12.0.0`.
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -7,6 +7,8 @@
 
 doctest-driver-gen is a doctest's driver file generator. It lets you automatically generate driver file for [doctest's cabal integration](https://github.com/sol/doctest/blob/master/README.markdown#cabal-integration).
 
+Versions of doctest available in this library: `>= 0.7 && < 0.12 || >= 0.13 && < 0.17`
+
 ## Usage
 
 ```haskell
diff --git a/doctest-driver-gen.cabal b/doctest-driver-gen.cabal
--- a/doctest-driver-gen.cabal
+++ b/doctest-driver-gen.cabal
@@ -1,5 +1,5 @@
 name:                doctest-driver-gen
-version:             0.2.0.4
+version:             0.3.0.0
 synopsis:            Generate driver file for doctest's cabal integration
 description:         doctest-driver-gen is a doctest's driver file generator.
                      It lets you automatically generate driver file for
@@ -19,29 +19,15 @@
   hs-source-dirs:      src
   exposed-modules:     Test.DocTest.Gen
   build-depends:       base >= 4.0 && < 4.13
-                       -- This dependency is not really necessary, but it looks
-                       -- good.
-                       , doctest >= 0.7 && < 0.12 || >= 0.13 && < 0.17
+                       -- Versions of doctest available in this library
+                       -- , doctest >= 0.7 && < 0.12 || >= 0.13 && < 0.17
   ghc-options:         -Wall
-                       -Wcompat
-                       -Wincomplete-record-updates
-                       -Wincomplete-uni-patterns
-                       -Wredundant-constraints
-                       -Wnoncanonical-monad-instances
   default-language:    Haskell2010
 
 executable doctest-driver-gen
   hs-source-dirs:      app
   main-is:             Main.hs
   ghc-options:         -Wall
-                       -Wcompat
-                       -Wincomplete-record-updates
-                       -Wincomplete-uni-patterns
-                       -Wredundant-constraints
-                       -Wnoncanonical-monad-instances
-                       -threaded
-                       -rtsopts
-                       -with-rtsopts=-N
   build-depends:       base
                      , doctest-driver-gen
   default-language:    Haskell2010
@@ -63,4 +49,4 @@
 source-repository this
   type:     git
   location: https://github.com/Hexirp/doctest-driver-gen
-  tag:      0.2.0.4
+  tag:      0.3.0.0
diff --git a/src/Test/DocTest/Gen.hs b/src/Test/DocTest/Gen.hs
--- a/src/Test/DocTest/Gen.hs
+++ b/src/Test/DocTest/Gen.hs
@@ -28,6 +28,7 @@
  -- | Output driver file.
  ddgen_output :: String -> [String] -> IO ()
  ddgen_output out opts = writeFile out $ unlines [
+  "import Prelude",
   "import Test.DocTest",
   "",
   "main :: IO ()",