diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 64cee77..7e2ac57 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -215,16 +215,42 @@ jobs:
   install-with-non-default-source-url:
     name: Install Nix using non-default source-url inputs
     runs-on: ubuntu-22.04
-    strategy:
-      matrix:
-        version:
-          - "0.12.0"
-          - "0.14.0"
-          - "0.18.0"
     steps:
-      - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@main
+      - name: Install with alternative source-url
+        uses: ./.
         with:
-          source-url: https://github.com/DeterminateSystems/nix-installer/releases/download/v${{ matrix.version }}/nix-installer-x86_64-linux
-      - name: Ensure that Nix is installed
+          source-url: https://github.com/DeterminateSystems/nix-installer/releases/download/v0.18.0/nix-installer-x86_64-linux
+      - name: Ensure that Nix is installed via alternative source-url
+        run: nix --version
+
+      - name: Install with alternative source-pr
+        uses: ./.
+        with:
+          # https://github.com/DeterminateSystems/nix-installer/pull/938
+          source-pr: "938"
+      - name: Ensure that Nix is installed via alternative source-pr
+        run: nix --version
+
+      - name: Install with alternative source-revision
+        uses: ./.
+        with:
+          # https://github.com/DeterminateSystems/nix-installer/tree/ccf1d39a83099657ad324e7927676432435431e1
+          source-revision: "ccf1d39a83099657ad324e7927676432435431e1"
+      - name: Ensure that Nix is installed via alternative source-revision
+        run: nix --version
+
+      - name: Install with alternative source-branch
+        uses: ./.
+        with:
+          # https://github.com/DeterminateSystems/nix-installer/tree/lazy-trees
+          source-revision: "lazy-trees"
+      - name: Ensure that Nix is installed via alternative source-branch
+        run: nix --version
+
+      - name: Install with alternative source-tag
+        uses: ./.
+        with:
+          # https://github.com/DeterminateSystems/nix-installer/tree/v0.14.0
+          source-tag: "v0.14.0"
+      - name: Ensure that Nix is installed via alternative source-tag
         run: nix --version