diff --git a/horizon.dhall b/horizon.dhall
index c4c0061cb85844acf4377f08e990ad07785a5016..f3b30a98f25d70a4f2ed3fe7c4ec5dcaf4cdfb08 100644
--- a/horizon.dhall
+++ b/horizon.dhall
@@ -546,7 +546,7 @@ let packages =
       , hls-test-utils = H.callHackage "hls-test-utils" "1.5.0.0"
       , hopenssl = H.callHackage "hopenssl" "2.2.4"
       , horizon-gen-nix = H.callHackage "horizon-gen-nix" "0.6"
-      , horizon-spec = H.callHackage "horizon-spec" "0.6"
+      , horizon-spec = H.callHackage "horizon-spec" "0.6.1"
       , hosc = H.callHackage "hosc" "0.19.1"
       , hostname = H.callHackage "hostname" "1.0"
       , hourglass = H.callHackage "hourglass" "0.2.12"
diff --git a/pkgs/horizon-spec.nix b/pkgs/horizon-spec.nix
index a56fdc37dab8d34c326937b0e2b6fda6667643c0..00087fe6a40a45a3540f285b197cdab7f4dc80f9 100644
--- a/pkgs/horizon-spec.nix
+++ b/pkgs/horizon-spec.nix
@@ -11,8 +11,8 @@
 }:
 mkDerivation {
   pname = "horizon-spec";
-  version = "0.6";
-  sha256 = "dc69a2f7aba3221465c7e3e1de65ebc993724f246defe77a96f2ae71d371c25c";
+  version = "0.6.1";
+  sha256 = "97840918baa16cc175560645d1cd3bf762f7b6133d9c44f1c4da152431f65ada";
   isLibrary = true;
   isExecutable = true;
   enableSeparateDataOutput = false;