diff --git a/.github/workflows/book.yml b/.github/workflows/book.yml
index 2a31963..979e135 100644
--- a/.github/workflows/book.yml
+++ b/.github/workflows/book.yml
@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4.1.7
 
-      - uses: DeterminateSystems/nix-installer-action@v14
+      - uses: DeterminateSystems/nix-installer-action@v15
         continue-on-error: true # Self-hosted runners already have Nix installed
 
       - name: Install Attic
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ec4d4d4..631d565 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -21,7 +21,7 @@ jobs:
         run: |
           command -v brew && brew install bash || true
 
-      - uses: DeterminateSystems/nix-installer-action@v14
+      - uses: DeterminateSystems/nix-installer-action@v15
         continue-on-error: true # Self-hosted runners already have Nix installed
 
       - name: Install Attic
@@ -83,7 +83,7 @@ jobs:
         run: |
           command -v brew && brew install bash || true
 
-      - uses: DeterminateSystems/nix-installer-action@v14
+      - uses: DeterminateSystems/nix-installer-action@v15
         continue-on-error: true # Self-hosted runners already have Nix installed
 
       - name: Install Attic
@@ -138,7 +138,7 @@ jobs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
     steps:
       - uses: actions/checkout@v4.1.7
-      - uses: DeterminateSystems/nix-installer-action@v14
+      - uses: DeterminateSystems/nix-installer-action@v15
         continue-on-error: true # Self-hosted runners already have Nix installed
 
       - name: Install Attic
@@ -183,7 +183,7 @@ jobs:
         run: |
           command -v brew && brew install bash || true
 
-      - uses: DeterminateSystems/nix-installer-action@v14
+      - uses: DeterminateSystems/nix-installer-action@v15
         continue-on-error: true # Self-hosted runners already have Nix installed
 
       - name: Install Attic
@@ -232,7 +232,7 @@ jobs:
         run: |
           command -v brew && brew install bash || true
 
-      - uses: DeterminateSystems/nix-installer-action@v14
+      - uses: DeterminateSystems/nix-installer-action@v15
         continue-on-error: true # Self-hosted runners already have Nix installed
 
       - name: Install Attic
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 4ae17ac..6a9f6e4 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -17,7 +17,7 @@ jobs:
         run: |
           command -v brew && brew install bash || true
 
-      - uses: DeterminateSystems/nix-installer-action@v14
+      - uses: DeterminateSystems/nix-installer-action@v15
         continue-on-error: true # Self-hosted runners already have Nix installed
 
       - name: Install Attic