diff --git a/.github/workflows/flakehub-publish-tagged.yml b/.github/workflows/flakehub-publish-tagged.yml
index 8b3f44338..798e1708a 100644
--- a/.github/workflows/flakehub-publish-tagged.yml
+++ b/.github/workflows/flakehub-publish-tagged.yml
@@ -20,7 +20,7 @@ jobs:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           ref: "${{ (inputs.tag != null) && format('refs/tags/{0}', inputs.tag) || '' }}"
-      - uses: DeterminateSystems/nix-installer-action@786fff0690178f1234e4e1fe9b536e94f5433196 # v20
+      - uses: DeterminateSystems/nix-installer-action@c5a866b6ab867e88becbed4467b93592bce69f8a # v21
       - uses: DeterminateSystems/flakehub-push@71f57208810a5d299fc6545350981de98fdbc860 # v6
         with:
           visibility: "public"