diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 39ea90d5..db94ba80 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -440,7 +440,7 @@ jobs:
         # DeterminateSystems installer detects and reuses pre-existing
         # `_nixbld` state so it doesn't abort on `eDSRecordAlreadyExists`
         # the way cachix/install-nix-action does.
-        uses: DeterminateSystems/nix-installer-action@v22
+        uses: DeterminateSystems/nix-installer-action@v23
 
       - name: Nix flake check
         run: nix flake check
@@ -828,7 +828,7 @@ jobs:
       - name: Install Nix
         # See the `nix` job for why we're on DeterminateSystems, not
         # cachix/install-nix-action.
-        uses: DeterminateSystems/nix-installer-action@v22
+        uses: DeterminateSystems/nix-installer-action@v23
 
       - name: Cache cargo registry & build (Nix-segregated)
         uses: actions/cache@v6