diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index e4fd7bb06a0..e32ccfa1793 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -727,7 +727,7 @@ self: super: {
           owner = "haskell-servant";
           repo = "servant";
           rev = "v${ver}";
-          sha256 = "0bwd5dy3crn08dijn06dr3mdsww98kqxfp8v5mvrdws5glvcxdsg";
+          sha256 = "0kqglih3rv12nmkzxvalhfaaafk4b2irvv9x5xmc48i1ns71y23l";
         }}/doc";
         buildInputs = with pkgs.pythonPackages; [ sphinx recommonmark sphinx_rtd_theme ];
         makeFlags = "html";