diff --git a/action.yml b/action.yml
index 9c3b0b02..5ef04a0d 100644
--- a/action.yml
+++ b/action.yml
@@ -3,7 +3,9 @@ description: 'Installs Nix on GitHub Actions for the supported platforms: Linux
 author: 'Domen Kožar'
 inputs:
   install_url:
-    description: 'Installation URL that will contain a script to install Nix'
+    description: 'Installation URL that will contain a script to install Nix.'
+  install_options:
+    description: 'Additional installer flags passed to the installer script.'
   nix_path:
     description: 'Set NIX_PATH environment variable.'
   extra_nix_config:
diff --git a/lib/install-nix.sh b/lib/install-nix.sh
index cc699976..fd2f1194 100755
--- a/lib/install-nix.sh
+++ b/lib/install-nix.sh
@@ -27,7 +27,11 @@ installer_options=(
   --darwin-use-unencrypted-nix-store-volume
   --nix-extra-conf-file /tmp/nix.conf
 )
+if [[ $INPUT_INSTALL_OPTIONS != "" ]]; then
+  installer_options=("${default_installer_options[@]}" "${INPUT_INSTALL_OPTIONS[@]}")
+fi
 
+echo "installer options: ${installer_options[@]}"
 # On self-hosted runners we don't need to install more than once
 if [[ ! -d /nix/store ]] 
 then