diff --git a/.github/workflows/binaries.yaml b/.github/workflows/binaries.yaml
index 1ef8d37e4b3..caf114b7743 100644
--- a/.github/workflows/binaries.yaml
+++ b/.github/workflows/binaries.yaml
@@ -23,7 +23,7 @@ jobs:
         fetch-depth: 0
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
@@ -67,7 +67,7 @@ jobs:
         fetch-depth: 0
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
diff --git a/.github/workflows/cardano-node.yaml b/.github/workflows/cardano-node.yaml
index fbefa76f6a1..4580ba57784 100644
--- a/.github/workflows/cardano-node.yaml
+++ b/.github/workflows/cardano-node.yaml
@@ -18,7 +18,7 @@ jobs:
         ref: 8.7.2
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
@@ -50,7 +50,7 @@ jobs:
         ref: 170817f5ba3f7838ffd9bd181bc30504906a6506
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
diff --git a/.github/workflows/ci-nix.yaml b/.github/workflows/ci-nix.yaml
index 6c1f93beeb3..b0e1505c3ec 100644
--- a/.github/workflows/ci-nix.yaml
+++ b/.github/workflows/ci-nix.yaml
@@ -39,7 +39,7 @@ jobs:
       uses: actions/checkout@v4
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
@@ -114,7 +114,7 @@ jobs:
       uses: actions/checkout@v4
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
@@ -161,7 +161,7 @@ jobs:
       uses: actions/checkout@v4
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
@@ -240,7 +240,7 @@ jobs:
       uses: actions/checkout@v4
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
@@ -265,7 +265,7 @@ jobs:
       uses: actions/checkout@v4
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
@@ -302,7 +302,7 @@ jobs:
         fetch-depth: 0
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
diff --git a/.github/workflows/docker.yaml b/.github/workflows/docker.yaml
index 98c959b365b..1edb6734163 100644
--- a/.github/workflows/docker.yaml
+++ b/.github/workflows/docker.yaml
@@ -36,7 +36,7 @@ jobs:
         password: ${{ secrets.GITHUB_TOKEN }}
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
diff --git a/.github/workflows/formatting.yaml b/.github/workflows/formatting.yaml
index 9f4ecd6d28d..6da45e2b4fa 100644
--- a/.github/workflows/formatting.yaml
+++ b/.github/workflows/formatting.yaml
@@ -14,7 +14,7 @@ jobs:
       uses: actions/checkout@v4
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
diff --git a/.github/workflows/network-test.yaml b/.github/workflows/network-test.yaml
index 8dfc617c270..ed6269037ed 100644
--- a/.github/workflows/network-test.yaml
+++ b/.github/workflows/network-test.yaml
@@ -40,7 +40,7 @@ jobs:
         submodules: true
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
diff --git a/.github/workflows/publish-docs.yaml b/.github/workflows/publish-docs.yaml
index 04b6c06bd6a..a5021265059 100644
--- a/.github/workflows/publish-docs.yaml
+++ b/.github/workflows/publish-docs.yaml
@@ -25,7 +25,7 @@ jobs:
         fetch-depth: 0
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
diff --git a/.github/workflows/smoke-test.yaml b/.github/workflows/smoke-test.yaml
index e9a6ef14108..b8a56ff645d 100644
--- a/.github/workflows/smoke-test.yaml
+++ b/.github/workflows/smoke-test.yaml
@@ -35,7 +35,7 @@ jobs:
         submodules: true
 
     - name: ❄ Prepare nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           accept-flake-config = true
diff --git a/.github/workflows/update-hydra-spec.yaml b/.github/workflows/update-hydra-spec.yaml
index 4f50a515466..8739dde37f7 100644
--- a/.github/workflows/update-hydra-spec.yaml
+++ b/.github/workflows/update-hydra-spec.yaml
@@ -11,7 +11,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@V28
+        uses: cachix/install-nix-action@v29
       - name: Update flake.lock
         uses: DeterminateSystems/update-flake-lock@v24
         with: