diff --git a/pkgs/development/python-modules/sphinx/default.nix b/pkgs/development/python-modules/sphinx/default.nix
index e83ab1c724aa..6f3d0b3c117b 100644
--- a/pkgs/development/python-modules/sphinx/default.nix
+++ b/pkgs/development/python-modules/sphinx/default.nix
@@ -27,10 +27,10 @@
 buildPythonPackage rec {
   name = "${pname}-${version}";
   pname = "Sphinx";
-  version = "1.6.5";
+  version = "1.6.6";
   src = fetchPypi {
     inherit pname version;
-    sha256 = "c6de5dbdbb7a0d7d2757f4389cc00e8f6eb3c49e1772378967a12cfcf2cfe098";
+    sha256 = "c39a6fa41bd3ec6fc10064329a664ed3a3ca2e27640a823dc520c682e4433cdb";
   };
   LC_ALL = "en_US.UTF-8";