diff --git a/CHANGELOG.md b/CHANGELOG.md
index e812e38..dc5ddc5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+1.5.7
+
+* Increase upper bound on `doctest`
+
 1.5.6
 
 * Increase upper bound on `exceptions`
diff --git a/README.md b/README.md
index c440c60..bdb6541 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Turtle v1.5.6
+# Turtle v1.5.7
 
 Turtle is a reimplementation of the Unix command line environment in Haskell so
 that you can use Haskell as a scripting language or a shell.  Think of `turtle`
diff --git a/default.nix b/default.nix
index 66f240d..cba8b3e 100644
--- a/default.nix
+++ b/default.nix
@@ -6,7 +6,7 @@
 }:
 mkDerivation {
   pname = "turtle";
-  version = "1.5.6";
+  version = "1.5.7";
   src = ./.;
   libraryHaskellDepends = [
     ansi-wl-pprint async base bytestring clock containers directory
diff --git a/turtle.cabal b/turtle.cabal
index 1c7618e..174e14e 100644
--- a/turtle.cabal
+++ b/turtle.cabal
@@ -1,5 +1,5 @@
 Name: turtle
-Version: 1.5.6
+Version: 1.5.7
 Cabal-Version: >=1.10
 Build-Type: Simple
 License: BSD3