diff --git a/sexp-grammar.cabal b/sexp-grammar.cabal
--- a/sexp-grammar.cabal
+++ b/sexp-grammar.cabal
@@ -1,5 +1,5 @@
 name:                sexp-grammar
-version:             2.3.2
+version:             2.3.3
 license:             BSD3
 license-file:        LICENSE
 author:              Yevhen Smolanka, Sergey Vinokurov
diff --git a/src/Language/Sexp/Encode.hs b/src/Language/Sexp/Encode.hs
--- a/src/Language/Sexp/Encode.hs
+++ b/src/Language/Sexp/Encode.hs
@@ -14,7 +14,12 @@
 import qualified Data.Text.Lazy as TL
 import qualified Data.Text.Lazy.Encoding as TL (encodeUtf8)
 import Data.ByteString.Lazy.Char8 (ByteString)
+#if !MIN_VERSION_bytestring(0,11,0)
 import Data.ByteString.Lazy.Builder.ASCII
+#else
+import Data.ByteString.Builder
+#endif
+
 
 #if !MIN_VERSION_base(4,11,0)
 import Data.Semigroup