diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,6 @@
+# Version 1.3.1.0
+  - Dependency bump for attoparsec 0.13.
+
 # Version 1.3.0.0
   - As long promised, removed the direct use of the `blaze-builder` package in
     favor of the new `bytestring-builder` transitional package (to be replaced
diff --git a/io-streams.cabal b/io-streams.cabal
--- a/io-streams.cabal
+++ b/io-streams.cabal
@@ -1,5 +1,5 @@
 Name:                io-streams
-Version:             1.3.0.0
+Version:             1.3.1.0
 License:             BSD3
 License-file:        LICENSE
 Category:            Data, Network, IO-Streams
@@ -118,7 +118,7 @@
                      System.IO.Streams.Internal.Search
 
   Build-depends:     base               >= 4     && <5,
-                     attoparsec         >= 0.10  && <0.13,
+                     attoparsec         >= 0.10  && <0.14,
                      bytestring         >= 0.9   && <0.11,
                      bytestring-builder >= 0.10  && <0.11,
                      network            >= 2.3   && <2.7,
diff --git a/src/System/IO/Streams/Combinators.hs b/src/System/IO/Streams/Combinators.hs
--- a/src/System/IO/Streams/Combinators.hs
+++ b/src/System/IO/Streams/Combinators.hs
@@ -69,7 +69,7 @@
 ------------------------------------------------------------------------------
 -- | A side-effecting fold over an 'OutputStream', as a stream transformer.
 --
--- The IO action returned by 'outputFoldM' can be used to fetch the updated
+-- The IO action returned by 'outputFoldM' can be used to fetch and reset the updated
 -- seed value. Example:
 --
 -- @
@@ -86,8 +86,8 @@
             -> a                          -- ^ initial seed
             -> OutputStream b             -- ^ output stream
             -> IO (OutputStream b, IO a)  -- ^ returns a new stream as well as
-                                          -- an IO action to fetch the updated
-                                          -- seed value.
+                                          -- an IO action to fetch and reset the
+                                          --  updated seed value.
 outputFoldM f initial stream = do
     ref <- newIORef initial
     os  <- makeOutputStream (wr ref)
@@ -107,7 +107,7 @@
 ------------------------------------------------------------------------------
 -- | A side-effecting fold over an 'InputStream', as a stream transformer.
 --
--- The IO action returned by 'inputFoldM' can be used to fetch the updated seed
+-- The IO action returned by 'inputFoldM' can be used to fetch and reset the updated seed
 -- value. Example:
 --
 -- @
@@ -122,8 +122,8 @@
            -> a                         -- ^ initial seed
            -> InputStream b             -- ^ input stream
            -> IO (InputStream b, IO a)  -- ^ returns a new stream as well as an
-                                        -- IO action to fetch the updated seed
-                                        -- value.
+                                        -- IO action to fetch and reset the
+                                        -- updated seed value.
 inputFoldM f initial stream = do
     ref <- newIORef initial
     is  <- makeInputStream (rd ref)