diff --git a/docker_nix/action.yml b/docker_nix/action.yml
index ae60f60..6ae86cb 100644
--- a/docker_nix/action.yml
+++ b/docker_nix/action.yml
@@ -1,7 +1,7 @@
 name: 'Get image ready to run nix jobs'
 description: 'Update apt repositories and installing sudo'
 inputs:
-  nix_version:
+  nix-version:
     description: 'Nix version to be installed'
     required: false
     default: nixos-unstable
@@ -16,7 +16,7 @@ runs:
         apt install sudo
     - uses: https://github.com/cachix/install-nix-action@v29
       with:
-        nix_path: nixpkgs=channel:${{ inputs.nix_version }}
+        nix_path: nixpkgs=channel:${{ inputs.nix-version }}
         extra_nix_config: |
           trusted-public-keys = skynet-cache:zMFLzcRZPhUpjXUy8SF8Cf7KGAZwo98SKrzeXvdWABo= hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
           substituters = https://nix-cache.skynet.ie/skynet-cache https://hydra.iohk.io https://cache.nixos.org/