diff --git a/hydra/stm32.json b/hydra/stm32.json
index c732841..1c040ad 100644
--- a/hydra/stm32.json
+++ b/hydra/stm32.json
@@ -11,7 +11,7 @@
         "emailoverride": "",
         "keepnr": 10,
         "inputs": {
-            "nixpkgs": { "type": "git", "value": "git://github.com/NixOS/nixpkgs nixos-20.03", "emailresponsible": false },
+            "nixpkgs": { "type": "git", "value": "git://github.com/NixOS/nixpkgs nixos-20.09", "emailresponsible": false },
             "mozillaOverlay": { "type": "git", "value": "git://github.com/mozilla/nixpkgs-mozilla.git", "emailresponsible": false },
             "nixScripts": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/nix-scripts.git", "emailresponsible": false },
             "stabilizerSrc": { "type": "git", "value": "git://github.com/quartiq/stabilizer.git", "emailresponsible": false },