diff --git a/action.yml b/action.yml
index 69ff7a5..819f16c 100644
--- a/action.yml
+++ b/action.yml
@@ -7,9 +7,6 @@ inputs:
   backtrace:
     description: The setting for `RUST_BACKTRACE` (see https://doc.rust-lang.org/std/backtrace/index.html#environment-variables)
     required: false
-  channels:
-    description: Channel(s) to add (eg `nixpkgs=https://nixos.org/channels/nixpkgs-unstable`)
-    required: false
   extra-args:
     description: Extra args to pass to the planner (prefer using structured `with:` arguments unless using a custom planner!)
     required: false
@@ -120,11 +117,6 @@ runs:
           fi
         fi
 
-        if [ -n "${{ inputs.channels }}" ]; then
-          export NIX_INSTALLER_CHANNELS=${{ inputs.channels }}
-          echo "Set NIX_INSTALLER_CHANNELS=$NIX_INSTALLER_CHANNELS"
-        fi
-
         if [ -n "${{ inputs.modify-profile }}" ]; then
           export NIX_INSTALLER_MODIFY_PROFILE=${{ inputs.modify-profile }}
           echo "Set NIX_INSTALLER_MODIFY_PROFILE=$NIX_INSTALLER_MODIFY_PROFILE"