diff --git a/horizon.dhall b/horizon.dhall
index 3c215bd480ceeb9986a6588e2a67925bf1a1f4ce..d707179206dcaee3f2a5565058bc2f3f98301d4a 100644
--- a/horizon.dhall
+++ b/horizon.dhall
@@ -367,6 +367,7 @@ let packages =
       , first-class-families = H.callHackage "first-class-families" "0.8.0.1"
       , fixed = H.callHackage "fixed" "0.3"
       , flag = H.callHackage "flag" "0.1.0.0"
+      , flag-dhall-instance = H.callHackage "flag-dhall-instance" "0.1.0.1"
       , floatshow = H.callHackage "floatshow" "0.2.4"
       , fmlist = H.callHackage "fmlist" "0.9.4"
       , fmt = H.callHackage "fmt" "0.6.3.0"
diff --git a/horizon.lock b/horizon.lock
index 2740212e9d57bbd50a8192b23df3e8d87e61d4a1..eeb19770643ac7a242756da0fcc598a6431eecee 100644
--- a/horizon.lock
+++ b/horizon.lock
@@ -1178,6 +1178,10 @@
   , mapValue =
       "d2ae9835e43e558ed603bf0b06f6f2d89cb5e55468e1561dcedf728ac456e933"
   }
+, { mapKey = "flag-dhall-instance"
+  , mapValue =
+      "c7ffc0b75ab77b645ea633f3515075701dcd9e5623170e800530f730d55de43b"
+  }
 , { mapKey = "floatshow"
   , mapValue =
       "d8e8542f57ceb0917e2602f0a2a1985fd0242bc7a151e669b1cad2be713dde25"
diff --git a/initial-packages.nix b/initial-packages.nix
index aa7b8be110f4e0d79f8c56d87507b795efe7c77f..cf71db1ff8dec39402ffb82f8d9fdf853a319f35 100644
--- a/initial-packages.nix
+++ b/initial-packages.nix
@@ -591,6 +591,8 @@ self: with pkgs.haskell.lib; {
 
   flag = self.callPackage (./pkgs/flag.nix) { };
 
+  flag-dhall-instance = self.callPackage (./pkgs/flag-dhall-instance.nix) { };
+
   floatshow = self.callPackage (./pkgs/floatshow.nix) { };
 
   fmlist = self.callPackage (./pkgs/fmlist.nix) { };
diff --git a/pkgs/flag-dhall-instance.nix b/pkgs/flag-dhall-instance.nix
new file mode 100644
index 0000000000000000000000000000000000000000..cf6038663aeb724e174453a5ecfab782ea3723f5
--- /dev/null
+++ b/pkgs/flag-dhall-instance.nix
@@ -0,0 +1,20 @@
+{ mkDerivation, base, dhall, flag, lib }:
+mkDerivation {
+  pname = "flag-dhall-instance";
+  version = "0.1.0.1";
+  sha256 = "5615f009e9494c70e231d80ba05f7594e87ab4bd58b13880381589bda6b1397f";
+  isLibrary = true;
+  isExecutable = false;
+  enableSeparateDataOutput = false;
+  libraryHaskellDepends = [ base dhall flag ];
+  enableLibraryProfiling = true;
+  enableExecutableProfiling = true;
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  doBenchmark = false;
+  hyperlinkSource = false;
+  description = "FromDhall and ToDhall instances for flag";
+  license = lib.licenses.mit;
+  broken = false;
+}
\ No newline at end of file