diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9f70cc0d..e76cce9d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@v26
 
       - name: Run formatter
         run: |
@@ -41,7 +41,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@v26
 
       - name: Setup cache
         uses: DeterminateSystems/magic-nix-cache-action@v3
diff --git a/.github/workflows/update-docs.yml b/.github/workflows/update-docs.yml
index 5b9b3cee..4eb52460 100644
--- a/.github/workflows/update-docs.yml
+++ b/.github/workflows/update-docs.yml
@@ -23,7 +23,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@v26
 
       - name: Set Git user info
         run: |
diff --git a/.github/workflows/update-lock.yml b/.github/workflows/update-lock.yml
index fad9f314..d9c0cbf8 100644
--- a/.github/workflows/update-lock.yml
+++ b/.github/workflows/update-lock.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@v26
 
       - name: Set Git user info
         run: |