diff --git a/action.yml b/action.yml
index fbc2f0b..4acef75 100644
--- a/action.yml
+++ b/action.yml
@@ -95,6 +95,10 @@ inputs:
     description: 'GPG Private Key Passphrase for the GPG Private Key with which to sign the commits in the PR to be created'
     required: false
     default: ''
+  nix-options:
+    description: 'A space-separated list of options to pass to the nix command'
+    required: false
+    default: ''
 outputs:
   pull-request-number:
     description: 'The number of the opened pull request'
@@ -146,6 +150,7 @@ runs:
         GIT_AUTHOR_EMAIL: ${{ env.GIT_AUTHOR_EMAIL }}
         GIT_COMMITTER_NAME: ${{ env.GIT_COMMITTER_NAME }}
         GIT_COMMITTER_EMAIL: ${{ env.GIT_COMMITTER_EMAIL }}
+        NIX_OPTIONS: ${{ inputs.nix-options }}
         TARGETS: ${{ inputs.inputs }}
         COMMIT_MSG: ${{ inputs.commit-msg }}
         PATH_TO_FLAKE_DIR: ${{ inputs.path-to-flake-dir }}
diff --git a/update-flake-lock.sh b/update-flake-lock.sh
index e33a199..b63d9c3 100755
--- a/update-flake-lock.sh
+++ b/update-flake-lock.sh
@@ -5,12 +5,19 @@ if [[ -n "$PATH_TO_FLAKE_DIR" ]]; then
   cd "$PATH_TO_FLAKE_DIR"
 fi
 
+options=()
+if [[ -n "$NIX_OPTIONS" ]]; then
+    for option in $NIX_OPTIONS; do
+        options+=("${option}")
+    done
+fi
+
 if [[ -n "$TARGETS" ]]; then
     inputs=()
     for input in $TARGETS; do
         inputs+=("--update-input" "$input")
     done
-    nix flake lock "${inputs[@]}" --commit-lock-file --commit-lockfile-summary "$COMMIT_MSG"
+    nix "${options[@]}" flake lock "${inputs[@]}" --commit-lock-file --commit-lockfile-summary "$COMMIT_MSG"
 else
-    nix flake update --commit-lock-file --commit-lockfile-summary "$COMMIT_MSG"
+    nix "${options[@]}" flake update --commit-lock-file --commit-lockfile-summary "$COMMIT_MSG"
 fi