diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,9 @@
+# ChangeLog for project-template
+
+## 0.2.1.0
+
+* Support base64-bytestring 1.1.0.0 [#4](https://github.com/fpco/haskell-ide/issues/4)
+
 ## 0.2.0.1
 
 * Use `throwM` instead of `monadThrow`
diff --git a/Text/ProjectTemplate.hs b/Text/ProjectTemplate.hs
--- a/Text/ProjectTemplate.hs
+++ b/Text/ProjectTemplate.hs
@@ -33,6 +33,7 @@
                                                runConduit, (.|))
 import qualified Data.Conduit.Binary          as CB
 import           Data.Conduit.List            (consume, sinkNull)
+import           Conduit                      (concatMapC, chunksOfCE)
 import qualified Data.Conduit.List            as CL
 import qualified Data.Conduit.Text            as CT
 import           Data.Map                     (Map)
@@ -57,7 +58,7 @@
             yield "{-# START_FILE BASE64 "
             yield $ encodeUtf8 $ T.pack fp
             yield " #-}\n"
-            yield $ B64.joinWith "\n" 76 $ B64.encode bs
+            yield (B64.encode bs) .| chunksOfCE 76 .| concatMapC (\x -> [x, "\n"])
             yield "\n"
         Just _ -> do
             yield "{-# START_FILE "
diff --git a/project-template.cabal b/project-template.cabal
--- a/project-template.cabal
+++ b/project-template.cabal
@@ -1,5 +1,5 @@
 name:                project-template
-version:             0.2.0.1
+version:             0.2.1.0
 synopsis:            Specify Haskell project templates and generate files
 description:         See initial blog post for explanation: <http://www.yesodweb.com/blog/2012/09/project-templates>
 homepage:            https://github.com/fpco/haskell-ide
@@ -9,10 +9,11 @@
 maintainer:          michael@fpcomplete.com
 category:            Development
 build-type:          Simple
-cabal-version:       >=1.8
+cabal-version:       >=1.10
 extra-source-files:  README.md ChangeLog.md
 
 library
+  default-language:    Haskell2010
   exposed-modules:     Text.ProjectTemplate
   build-depends:       base                         >= 4          && < 5
                      , base64-bytestring
@@ -29,6 +30,7 @@
   ghc-options:     -Wall
 
 test-suite test
+    default-language:    Haskell2010
     hs-source-dirs: test
     main-is: Spec.hs
     other-modules: Text.ProjectTemplateSpec
diff --git a/test/Text/ProjectTemplateSpec.hs b/test/Text/ProjectTemplateSpec.hs
--- a/test/Text/ProjectTemplateSpec.hs
+++ b/test/Text/ProjectTemplateSpec.hs
@@ -31,10 +31,19 @@
     describe "binaries" $ do
         prop "works with multilines" $ \words' -> do
             let bs = S.pack words'
-                encoded = B64.joinWith "\n" 5 $ B64.encode bs
+                encoded = joinWith "\n" 5 $ B64.encode bs
                 content = "{-# START_FILE BASE64 foo #-}\n" `mappend` encoded
             m <- execWriterT $ runConduit $ yield content .| unpackTemplate receiveMem id
             Map.lookup "foo" m `shouldBe` Just (L.fromChunks [bs])
+
+joinWith :: S.ByteString -> Int -> S.ByteString -> S.ByteString
+joinWith joiner size = S.concat . map (`S.append` joiner) . chunksOf size
+
+chunksOf :: Int -> S.ByteString -> [S.ByteString]
+chunksOf _ bs | S.null bs = []
+chunksOf size bs =
+    let (x, y) = S.splitAt size bs
+     in x : chunksOf size y
 
 newtype Helper = Helper (Map.Map FilePath S.ByteString)
     deriving (Show, Eq)