--- a/fast-logger.cabal
+++ b/fast-logger.cabal
@@ -25,8 +25,7 @@ Library
                       , array
                       , auto-update >= 0.1.2
                       , easy-file >= 0.2
-                      , bytestring
-                      , bytestring-builder
+                      , bytestring >= 0.10.4
                       , directory
                       , filepath
                       , text
