diff --git a/hydra/artiq.json b/hydra/artiq.json
index 5a1d455..abd4114 100644
--- a/hydra/artiq.json
+++ b/hydra/artiq.json
@@ -11,7 +11,7 @@
         "emailoverride": "",
         "keepnr": 10,
         "inputs": {
-            "nixpkgs": { "type": "git", "value": "git://github.com/NixOS/nixpkgs nixos-20.09", "emailresponsible": false },
+            "nixpkgs": { "type": "git", "value": "git://github.com/NixOS/nixpkgs nixos-21.05", "emailresponsible": false },
             "nixScripts": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/nix-scripts.git", "emailresponsible": false },
             "artiqSrc": { "type": "git", "value": "git://github.com/m-labs/artiq.git master 1", "emailresponsible": false }
         }
@@ -28,7 +28,7 @@
         "emailoverride": "",
         "keepnr": 10,
         "inputs": {
-            "nixpkgs": { "type": "git", "value": "git://github.com/NixOS/nixpkgs nixos-20.09", "emailresponsible": false },
+            "nixpkgs": { "type": "git", "value": "git://github.com/NixOS/nixpkgs nixos-21.05", "emailresponsible": false },
             "nixScripts": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/nix-scripts.git", "emailresponsible": false },
             "sinaraSystemsSrc": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/sinara-systems.git master 1", "emailresponsible": false },
             "artiq-fast": { "type": "sysbuild", "value": "artiq:fast-beta:generated-nix", "emailresponsible": false }
@@ -46,7 +46,7 @@
         "emailoverride": "",
         "keepnr": 10,
         "inputs": {
-            "nixpkgs": { "type": "git", "value": "git://github.com/NixOS/nixpkgs nixos-20.09", "emailresponsible": false },
+            "nixpkgs": { "type": "git", "value": "git://github.com/NixOS/nixpkgs nixos-21.05", "emailresponsible": false },
             "nixScripts": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/nix-scripts.git", "emailresponsible": false },
             "a6p": { "type": "boolean", "value": "true" },
             "artiq-board-generated": { "type": "sysbuild", "value": "artiq:board-generated-beta:generated-nix", "emailresponsible": false }