diff --git a/Data/SortedList.hs b/Data/SortedList.hs
--- a/Data/SortedList.hs
+++ b/Data/SortedList.hs
@@ -53,7 +53,7 @@
   , null, map, reverse
   , span, takeWhile, dropWhile
 #if !MIN_VERSION_base(4,8,0)
-  , foldr
+  , foldr, foldl
 #endif
     )
 import qualified Data.List as List
diff --git a/sorted-list.cabal b/sorted-list.cabal
--- a/sorted-list.cabal
+++ b/sorted-list.cabal
@@ -1,5 +1,5 @@
 name:                sorted-list
-version:             0.1.4.0
+version:             0.1.4.1
 synopsis:            Type-enforced sorted lists and related functions.
 description:         Type-enforced sorted lists and related functions.
                      .