diff --git a/nix/sources.json b/nix/sources.json
index 6413998..0ce4a75 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -74,10 +74,10 @@
         "homepage": "",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "062a0c5437b68f950b081bbfc8a699d57a4ee026",
-        "sha256": "0vfd7g1gwy9lcnnv8kclqr68pndd9sg0xq69h465zbbzb2vnijh9",
+        "rev": "c777cdf5c564015d5f63b09cc93bef4178b19b01",
+        "sha256": "0r2xhflcy5agaz4a3b8pxiyiwh32s1kl3swv73flnj1x3v69s8bm",
         "type": "tarball",
-        "url": "https://github.com/nixos/nixpkgs/archive/062a0c5437b68f950b081bbfc8a699d57a4ee026.tar.gz",
+        "url": "https://github.com/nixos/nixpkgs/archive/c777cdf5c564015d5f63b09cc93bef4178b19b01.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }
diff --git a/profiles/iohk.nix b/profiles/iohk.nix
index 7b4025f..68ca471 100644
--- a/profiles/iohk.nix
+++ b/profiles/iohk.nix
@@ -6,7 +6,7 @@
   ...
 }: let
   sources = import ../nix/sources.nix;
-  nixUnstable = (import sources.nixpkgsUnstable {}).nixVersions.unstable;
+  nixUnstable = (import sources.nixpkgsUnstable {}).nixVersions.stable;
 in {
   imports = [../profiles/terminal-recording.nix ../profiles/nix-direnv.nix];