diff --git a/arion-compose.cabal b/arion-compose.cabal
index 6b0c14b..1385f18 100644
--- a/arion-compose.cabal
+++ b/arion-compose.cabal
@@ -31,7 +31,7 @@ source-repository head
 
 common common
   build-depends:     base >=4.12.0.0 && <4.17
-                   , aeson
+                   , aeson >=2
                    , aeson-pretty
                    , async
                    , bytestring
diff --git a/flake.lock b/flake.lock
index b5bf0a3..e3a9e45 100644
--- a/flake.lock
+++ b/flake.lock
@@ -38,16 +38,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1669791787,
-        "narHash": "sha256-KBfoA2fOI5+wCrm7PR+j7jHqXeTkVRPQ0m5fcKchyuU=",
+        "lastModified": 1669980218,
+        "narHash": "sha256-HBK1tIqarj7ZsSwQEKGlyvbAIFnglytG7FxuS4K3nY8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e76c78d20685a043d23f5f9e0ccd2203997f1fb1",
+        "rev": "da7988fe440ef5b8779d4f76340ad7dc79ff3b33",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-unstable",
+        "ref": "haskell-updates",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 3ec601c..826980d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,7 @@
   description = "Arion - use Docker Compose via Nix";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    nixpkgs.url = "github:NixOS/nixpkgs/haskell-updates";
     haskell-flake.url = "github:srid/haskell-flake";
     flake-parts.url = "github:hercules-ci/flake-parts/easyOverlay"; # TODO merge
     flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";
diff --git a/src/haskell/lib/Arion/Services.hs b/src/haskell/lib/Arion/Services.hs
index d8ecb30..249ccf7 100644
--- a/src/haskell/lib/Arion/Services.hs
+++ b/src/haskell/lib/Arion/Services.hs
@@ -9,6 +9,7 @@ import Prelude()
 import Protolude hiding (to)
 
 import qualified Data.Aeson as Aeson
+import qualified Data.Aeson.Key as AK
 import           Arion.Aeson (decodeFile)
 
 import Control.Lens
@@ -20,4 +21,4 @@ getDefaultExec fp service = do
 
   v <- decodeFile fp
 
-  pure ((v :: Aeson.Value) ^.. key "x-arion" . key "serviceInfo" . key service . key "defaultExec" . _Array . traverse . _String)
+  pure ((v :: Aeson.Value) ^.. key "x-arion" . key "serviceInfo" . key (AK.fromText service) . key "defaultExec" . _Array . traverse . _String)