diff --git a/horizon.dhall b/horizon.dhall
index 1ea0ddc949102639ad073a16121ffc250d4c21b0..22cd453268d85194a4bc27bec6eb1a9587791926 100644
--- a/horizon.dhall
+++ b/horizon.dhall
@@ -84,8 +84,8 @@ let packages =
       , brick = H.callHackage "brick" "1.9"
       , bytes = H.callHackage "bytes" "0.17.2"
       , c2hs = H.callHackage "c2hs" "0.28.8"
-      , cabal-install = H.callHackage "cabal-install" "3.10.1.0"
-      , cabal-install-solver = H.callHackage "cabal-install-solver" "3.10.1.0"
+      , cabal-install = H.callHackage "cabal-install" "3.8.1.0"
+      , cabal-install-solver = H.callHackage "cabal-install-solver" "3.8.1.0"
       , cache = H.callHackage "cache" "0.1.3.0"
       , canonical-json = H.callHackage "canonical-json" "0.6.0.1"
       , casing = H.callHackage "casing" "0.1.4.1"
diff --git a/horizon.lock b/horizon.lock
index d1e2f76c763e62a2989920125d81665c422cd02b..e10bbe0b4a41488a5aabfd28a2c98ad0db06fc8f 100644
--- a/horizon.lock
+++ b/horizon.lock
@@ -260,11 +260,11 @@
   }
 , { mapKey = "cabal-install"
   , mapValue =
-      "4ab64ffdc186f5bb7a2b373d55379846962df7adbac7344a80d6e986cb50d0d7"
+      "fd2294df1599586608fc7dd0797a6095f473d35c91ab21d93503e28a99fa73c3"
   }
 , { mapKey = "cabal-install-solver"
   , mapValue =
-      "3e8e76bf69b3f8aae7fff83b7197fd0340c1a025d67439bb7c2840c09b9ae61a"
+      "83ab01d8bc94f20d343e44d059a87f5b104a998e8b4c44399e63a47372545418"
   }
 , { mapKey = "cache"
   , mapValue =
diff --git a/pkgs/cabal-install-solver.nix b/pkgs/cabal-install-solver.nix
index ed39aad2e78d9ab77421ccec08dd2811543964db..7679bba07f4f8e2fee8d26af11d7b570afa05df9 100644
--- a/pkgs/cabal-install-solver.nix
+++ b/pkgs/cabal-install-solver.nix
@@ -4,8 +4,10 @@
 }:
 mkDerivation {
   pname = "cabal-install-solver";
-  version = "3.10.1.0";
-  sha256 = "2c0d9edd4ccd746e9bf8ab4f92b1ecffe2f56eae29395c67ef5ca091a6f49f37";
+  version = "3.8.1.0";
+  sha256 = "df2369f6c37517a3b2625bc19057d9e206bbb40386bcb607f17dc7d2e588ffe7";
+  revision = "1";
+  editedCabalFile = "1g487j20pj03pc10yaha18v73wh3ackxjgfpfqaj7xznqcbm5xwm";
   isLibrary = true;
   isExecutable = false;
   enableSeparateDataOutput = false;
diff --git a/pkgs/cabal-install.nix b/pkgs/cabal-install.nix
index eb57c04d07e6671b840184cf7d666aaeb5b8d354..76b4561150c5c8978b7ae71ec32c3a7a30f805d7 100644
--- a/pkgs/cabal-install.nix
+++ b/pkgs/cabal-install.nix
@@ -10,8 +10,10 @@
 }:
 mkDerivation {
   pname = "cabal-install";
-  version = "3.10.1.0";
-  sha256 = "995de368555449230e0762b259377ed720798717f4dd26a4fa711e8e41c7838d";
+  version = "3.8.1.0";
+  sha256 = "61ce436f2e14e12bf07ea1c81402362f46275014cd841a76566f0766d0ea67e6";
+  revision = "3";
+  editedCabalFile = "14l2jvyrzhgkmgkrkhmb6cb1vy4pgcg3q8dgyg8vszpm0mb1ws77";
   isLibrary = true;
   isExecutable = true;
   enableSeparateDataOutput = false;