diff --git a/compat/default.nix b/compat/default.nix
index 91d7ff9..2ee185c 100644
--- a/compat/default.nix
+++ b/compat/default.nix
@@ -1,9 +1,12 @@
 let
+  inherit (lock.nodes.flake-compat.locked) rev narHash;
+
+  lock = builtins.fromJSON (builtins.readFile ../flake.lock);
   flake = (import
     (
       fetchTarball {
-        url = "https://github.com/edolstra/flake-compat/archive/99f1c2157fba4bfe6211a321fd0ee43199025dbf.tar.gz";
-        sha256 = "sha256:0x2jn3vrawwv9xp15674wjz9pixwjyj3j771izayl962zziivbx2";
+        url = "https://github.com/edolstra/flake-compat/archive/${rev}.tar.gz";
+        sha256 = narHash;
       }
     )
     {
diff --git a/flake.lock b/flake.lock
index f025cf5..ab54707 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,7 +2,9 @@
   "nodes": {
     "ci-agent": {
       "inputs": {
-        "flake-compat": "flake-compat",
+        "flake-compat": [
+          "flake-compat"
+        ],
         "nixos-20_09": [
           "nixos"
         ],
@@ -43,11 +45,11 @@
     "flake-compat": {
       "flake": false,
       "locked": {
-        "lastModified": 1603796912,
-        "narHash": "sha256-6ayqpH/4XiEXylNdWI3AghubqS6XuiPg3Y60jY8RTo4=",
+        "lastModified": 1606424373,
+        "narHash": "sha256-oq8d4//CJOrVj+EcOaSXvMebvuTkmBJuT5tzlfewUnQ=",
         "owner": "edolstra",
         "repo": "flake-compat",
-        "rev": "19576c2aea7f074ff0da818b21a8b0950ff6ec86",
+        "rev": "99f1c2157fba4bfe6211a321fd0ee43199025dbf",
         "type": "github"
       },
       "original": {
@@ -172,6 +174,7 @@
         "ci-agent": "ci-agent",
         "devshell": "devshell",
         "flake-utils": "flake-utils",
+        "flake-compat": "flake-compat",
         "home": "home",
         "nixos": "nixos",
         "nixos-hardware": "nixos-hardware",
diff --git a/flake.nix b/flake.nix
index 2d2c3bf..a9d0bf5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -13,6 +13,9 @@
       ci-agent.url = "github:hercules-ci/hercules-ci-agent";
       ci-agent.inputs.nixos-20_09.follows = "nixos";
       ci-agent.inputs.nixos-unstable.follows = "override";
+      ci-agent.inputs.flake-compat.follows = "flake-compat";
+      flake-compat.url = "github:edolstra/flake-compat";
+      flake-compat.flake = false;
     };
 
   outputs =
@@ -25,6 +28,7 @@
     , nur
     , devshell
     , nixos-hardware
+    , ...
     }:
     let
       inherit (flake-utils.lib) eachDefaultSystem flattenTreeSystem;