diff --git a/.github/workflows/nightly.yaml b/.github/workflows/nightly.yaml
index 2fb29a26a..e0f386af1 100644
--- a/.github/workflows/nightly.yaml
+++ b/.github/workflows/nightly.yaml
@@ -27,7 +27,7 @@ jobs:
   lint:
     runs-on: ubuntu-22.04
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - uses: actions/checkout@v4
@@ -73,7 +73,7 @@ jobs:
           secret-ids: |
             ,sdlc/prod/github/redpanda_sample_license
           parse-json-secrets: true
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - uses: actions/checkout@v4
diff --git a/.github/workflows/nightly_redpanda_tip.yaml b/.github/workflows/nightly_redpanda_tip.yaml
index 37fd43821..f06c8aa8b 100644
--- a/.github/workflows/nightly_redpanda_tip.yaml
+++ b/.github/workflows/nightly_redpanda_tip.yaml
@@ -42,7 +42,7 @@ jobs:
       fail-fast: false
     runs-on: ubuntu-22.04
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - uses: actions/checkout@v4
diff --git a/.github/workflows/nightly_version_checks.yaml b/.github/workflows/nightly_version_checks.yaml
index 671b42d35..adc272a04 100644
--- a/.github/workflows/nightly_version_checks.yaml
+++ b/.github/workflows/nightly_version_checks.yaml
@@ -46,7 +46,7 @@ jobs:
           secret-ids: |
             ,sdlc/prod/github/actions_bot_token
           parse-json-secrets: true
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       # Cache the nix store.
diff --git a/.github/workflows/pull_requests.yaml b/.github/workflows/pull_requests.yaml
index bd5696aac..671bf12cb 100644
--- a/.github/workflows/pull_requests.yaml
+++ b/.github/workflows/pull_requests.yaml
@@ -87,7 +87,7 @@ jobs:
   lint:
     runs-on: ubuntu-22.04
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       # Cache the nix store.
@@ -99,7 +99,7 @@ jobs:
     if: ${{ needs.changes.outputs.go-code == 'true' }}
     runs-on: ubuntu-22.04
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - uses: DeterminateSystems/magic-nix-cache-action@v8
diff --git a/.github/workflows/pull_requests_from_origin.yaml b/.github/workflows/pull_requests_from_origin.yaml
index 329770a37..44b98ba5e 100644
--- a/.github/workflows/pull_requests_from_origin.yaml
+++ b/.github/workflows/pull_requests_from_origin.yaml
@@ -60,7 +60,7 @@ jobs:
           secret-ids: |
             ,sdlc/prod/github/redpanda_sample_license
           parse-json-secrets: true
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - uses: actions/checkout@v4
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index dcc8efa2b..135b9fe8c 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -42,7 +42,7 @@ jobs:
           secret-ids: |
             ,sdlc/prod/github/actions_bot_token
           parse-json-secrets: true
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       # Cache the nix store.
diff --git a/.github/workflows/test_connectors.yaml b/.github/workflows/test_connectors.yaml
index 9b8c7f209..23a7b97e7 100644
--- a/.github/workflows/test_connectors.yaml
+++ b/.github/workflows/test_connectors.yaml
@@ -29,7 +29,7 @@ jobs:
       fail-fast: true
     runs-on: ubuntu-22.04
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       # Cache the nix store.
diff --git a/.github/workflows/test_kminion.yaml b/.github/workflows/test_kminion.yaml
index a7e2e5235..051ec5ea8 100644
--- a/.github/workflows/test_kminion.yaml
+++ b/.github/workflows/test_kminion.yaml
@@ -29,7 +29,7 @@ jobs:
       fail-fast: true
     runs-on: ubuntu-22.04
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       # Cache the nix store.
diff --git a/.github/workflows/test_operator.yaml b/.github/workflows/test_operator.yaml
index 560095526..bc72cac6a 100644
--- a/.github/workflows/test_operator.yaml
+++ b/.github/workflows/test_operator.yaml
@@ -29,7 +29,7 @@ jobs:
       fail-fast: true
     runs-on: ubuntu-22.04
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       # Cache the nix store.
diff --git a/.github/workflows/test_redpanda.yaml b/.github/workflows/test_redpanda.yaml
index de6b77c9b..92fbfab64 100644
--- a/.github/workflows/test_redpanda.yaml
+++ b/.github/workflows/test_redpanda.yaml
@@ -31,7 +31,7 @@ jobs:
       fail-fast: false
     runs-on: ubuntu-22.04
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       # Cache the nix store.
diff --git a/.github/workflows/test_redpanda_integration.yaml b/.github/workflows/test_redpanda_integration.yaml
index 2a4fa6dd1..89e990fb6 100644
--- a/.github/workflows/test_redpanda_integration.yaml
+++ b/.github/workflows/test_redpanda_integration.yaml
@@ -38,7 +38,7 @@ jobs:
           secret-ids: |
             ,sdlc/prod/github/redpanda_sample_license
           parse-json-secrets: true
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       # Cache the nix store.