diff --git a/.github/actions/setup-nix/action.yaml b/.github/actions/setup-nix/action.yaml
index b1071ae5c8..a5d0a87a23 100644
--- a/.github/actions/setup-nix/action.yaml
+++ b/.github/actions/setup-nix/action.yaml
@@ -21,8 +21,7 @@ runs:
       uses: nix-community/cache-nix-action@v5.0.1
       with:
         primary-key: cache-nix-${{ runner.os }}-id-${{ inputs.cache-id }}-${{ hashFiles('nix/**/*.nix', '.github/actions/setup-nix/*') }}
-        restore-prefixes-first-match: |
-          cache-nix-${{ runner.os }}-id-
+        restore-prefixes-first-match: "cache-nix-${{ runner.os }}-id-"
     - uses: cachix/cachix-action@v14
       with:
         name: postgrest