diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 21bee78..021398b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -27,7 +27,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v6
+        uses: DeterminateSystems/nix-installer-action@v8
 
       - name: Get list of packages to build
         id: matrix
@@ -54,7 +54,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v6
+        uses: DeterminateSystems/nix-installer-action@v8
 
       # cachix-action will take care of pushing everything to the binary cache.
       - name: Set up binary cache
diff --git a/.github/workflows/update-flake.yml b/.github/workflows/update-flake.yml
index c61efa9..d63a0a3 100644
--- a/.github/workflows/update-flake.yml
+++ b/.github/workflows/update-flake.yml
@@ -44,7 +44,7 @@ jobs:
           git config user.email 41898282+github-actions[bot]@users.noreply.github.com
 
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v6
+        uses: DeterminateSystems/nix-installer-action@v8
 
       # This will fail if the branch already exists; since pull requests created
       # by this workflow should be auto-merged, an existing branch either means
diff --git a/.github/workflows/update-packages.yml b/.github/workflows/update-packages.yml
index 0dc4341..50ec745 100644
--- a/.github/workflows/update-packages.yml
+++ b/.github/workflows/update-packages.yml
@@ -35,7 +35,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v6
+        uses: DeterminateSystems/nix-installer-action@v8
 
       - name: Get list of packages to update
         id: matrix
@@ -76,7 +76,7 @@ jobs:
           git config user.email 41898282+github-actions[bot]@users.noreply.github.com
 
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v6
+        uses: DeterminateSystems/nix-installer-action@v8
 
       # This will fail if the branch already exists; since pull requests created
       # by this workflow should be auto-merged, an existing branch either means