diff --git a/flake.lock b/flake.lock
index fd43d8e2d1..13d23e7c45 100644
--- a/flake.lock
+++ b/flake.lock
@@ -201,6 +201,24 @@
         "type": "github"
       }
     },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "gentle-introduction": {
       "flake": false,
       "locked": {
@@ -632,6 +650,22 @@
         "type": "github"
       }
     },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1737264083,
+        "narHash": "sha256-6QqSrHPN+ZD+7HuadVLuFNUaM8XnmZF3EO7QViM1b80=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "aa6ae0afa6adeb5c202a168e51eda1d3da571117",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs-2305": {
       "locked": {
         "lastModified": 1705033721,
@@ -745,6 +779,26 @@
         "type": "github"
       }
     },
+    "peras-demo": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1759139315,
+        "narHash": "sha256-a3hwxHpXtfFNsMr5Jg5SOxyk781QaKvgG0dfry7sIF4=",
+        "owner": "tweag",
+        "repo": "cardano-peras",
+        "rev": "92ed6ce8f42897b243577d2ad306021d361036af",
+        "type": "github"
+      },
+      "original": {
+        "owner": "tweag",
+        "ref": "demo",
+        "repo": "cardano-peras",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "CHaP": "CHaP",
@@ -760,7 +814,8 @@
         "nixpkgs": [
           "haskellNix",
           "nixpkgs-unstable"
-        ]
+        ],
+        "peras-demo": "peras-demo"
       }
     },
     "secp256k1": {
@@ -827,6 +882,21 @@
         "repo": "default",
         "type": "github"
       }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index 1ec1d44eb1..ea5097e243 100644
--- a/flake.nix
+++ b/flake.nix
@@ -45,6 +45,11 @@
       url = "github:phadej/gentle-introduction";
       flake = false;
     };
+    # === vvv TEMPORARY vvv ===
+    peras-demo = {
+      url = "github:tweag/cardano-peras/demo";
+    };
+    # === ^^^ TEMPORARY ^^^ ===
   };
   outputs = inputs:
     let
@@ -90,7 +95,11 @@
             packages = [ pkgs.nodejs pkgs.yarn ];
           };
         };
-        inherit hydraJobs;
+        # === vvv TEMPORARY vvv ===
+        hydraJobs = hydraJobs // {
+          peras-demo.required = inputs.peras-demo.packages.${system}.demo;
+        };
+        # === ^^^ TEMPORARY ^^^ ===
         legacyPackages = pkgs;
         packages = hydraJobs.native.haskell96.exesNoAsserts;
       }