diff --git a/.github/workflows/k8s-e2e.yaml b/.github/workflows/k8s-e2e.yaml
index a9ebedf..bbfc0d6 100644
--- a/.github/workflows/k8s-e2e.yaml
+++ b/.github/workflows/k8s-e2e.yaml
@@ -67,7 +67,7 @@ jobs:
     steps:
       - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
       - name: Install Nix
-        uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+        uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - name: Load Nix
@@ -118,7 +118,7 @@ jobs:
     steps:
       - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
       - name: Install Nix
-        uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+        uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - name: Load Nix
diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index 4207e33..805af58 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -15,7 +15,7 @@ jobs:
         with:
           fetch-depth: 0 # needed for pre-commit to work correctly
       - name: Install Nix
-        uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+        uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - name: Run pre-commit checks
diff --git a/.github/workflows/seth-lint.yml b/.github/workflows/seth-lint.yml
index a9712b1..db10f00 100644
--- a/.github/workflows/seth-lint.yml
+++ b/.github/workflows/seth-lint.yml
@@ -20,7 +20,7 @@ jobs:
           filters: |
             src:
               - 'seth/**'
-      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+      - uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
         if: steps.changes.outputs.src == 'true'
         with:
           nix_path: nixpkgs=channel:nixos-unstable
diff --git a/.github/workflows/seth-test-api.yml b/.github/workflows/seth-test-api.yml
index 78c1a82..1ad9c68 100644
--- a/.github/workflows/seth-test-api.yml
+++ b/.github/workflows/seth-test-api.yml
@@ -25,7 +25,7 @@ jobs:
           filters: |
             src:
               - 'seth/**'
-      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+      - uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
         if: steps.changes.outputs.src == 'true'
         with:
           nix_path: nixpkgs=channel:nixos-unstable
diff --git a/.github/workflows/seth-test-bumping.yml b/.github/workflows/seth-test-bumping.yml
index 5d28949..570ad51 100644
--- a/.github/workflows/seth-test-bumping.yml
+++ b/.github/workflows/seth-test-bumping.yml
@@ -25,7 +25,7 @@ jobs:
           filters: |
             src:
               - 'seth/**'
-      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+      - uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
         if: steps.changes.outputs.src == 'true'
         with:
           nix_path: nixpkgs=channel:nixos-unstable
diff --git a/.github/workflows/seth-test-cli.yml b/.github/workflows/seth-test-cli.yml
index 68f3f4f..e01c2f2 100644
--- a/.github/workflows/seth-test-cli.yml
+++ b/.github/workflows/seth-test-cli.yml
@@ -25,7 +25,7 @@ jobs:
           filters: |
             src:
               - 'seth/**'
-      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+      - uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
         if: steps.changes.outputs.src == 'true'
         with:
           nix_path: nixpkgs=channel:nixos-unstable
diff --git a/.github/workflows/seth-test-decode-testnet.yml b/.github/workflows/seth-test-decode-testnet.yml
index de81c3d..f142a00 100644
--- a/.github/workflows/seth-test-decode-testnet.yml
+++ b/.github/workflows/seth-test-decode-testnet.yml
@@ -27,7 +27,7 @@ jobs:
           filters: |
             src:
               - 'seth/**'
-      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+      - uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
         if: steps.changes.outputs.src == 'true'
         with:
           nix_path: nixpkgs=channel:nixos-unstable
diff --git a/.github/workflows/seth-test-decode.yml b/.github/workflows/seth-test-decode.yml
index 51a7267..5d71044 100644
--- a/.github/workflows/seth-test-decode.yml
+++ b/.github/workflows/seth-test-decode.yml
@@ -25,7 +25,7 @@ jobs:
           filters: |
             src:
               - 'seth/**'
-      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+      - uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
         if: steps.changes.outputs.src == 'true'
         with:
           nix_path: nixpkgs=channel:nixos-unstable
diff --git a/.github/workflows/seth-test-others.yml b/.github/workflows/seth-test-others.yml
index a94b159..18f941c 100644
--- a/.github/workflows/seth-test-others.yml
+++ b/.github/workflows/seth-test-others.yml
@@ -25,7 +25,7 @@ jobs:
           filters: |
             src:
               - 'seth/**'
-      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+      - uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
         if: steps.changes.outputs.src == 'true'
         with:
           nix_path: nixpkgs=channel:nixos-unstable
diff --git a/.github/workflows/seth-test-trace.yml b/.github/workflows/seth-test-trace.yml
index f7b7840..0f8c545 100644
--- a/.github/workflows/seth-test-trace.yml
+++ b/.github/workflows/seth-test-trace.yml
@@ -25,7 +25,7 @@ jobs:
           filters: |
             src:
               - 'seth/**'
-      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+      - uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
         if: steps.changes.outputs.src == 'true'
         with:
           nix_path: nixpkgs=channel:nixos-unstable
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 340a4a6..0a7527e 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -32,7 +32,7 @@ jobs:
       - name: Install gotestloghelper
         run: cd lib && make gotestloghelper_build
       - name: Install Nix
-        uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+        uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - name: Load Nix
diff --git a/.github/workflows/wasp-lint.yml b/.github/workflows/wasp-lint.yml
index effc9a8..004f77c 100644
--- a/.github/workflows/wasp-lint.yml
+++ b/.github/workflows/wasp-lint.yml
@@ -18,7 +18,7 @@ jobs:
           filters: |
             src:
               - 'wasp/**'
-      - uses: cachix/install-nix-action@v18
+      - uses: cachix/install-nix-action@v30
         if: steps.changes.outputs.src == 'true'
         with:
           nix_path: nixpkgs=channel:nixos-unstable
diff --git a/.github/workflows/wasp-test-e2e.yml b/.github/workflows/wasp-test-e2e.yml
index dc297c3..509f9d8 100644
--- a/.github/workflows/wasp-test-e2e.yml
+++ b/.github/workflows/wasp-test-e2e.yml
@@ -21,7 +21,7 @@ jobs:
           filters: |
             src:
               - 'wasp/**'
-      - uses: cachix/install-nix-action@v18
+      - uses: cachix/install-nix-action@v30
         if: steps.changes.outputs.src == 'true'
         with:
           nix_path: nixpkgs=channel:nixos-unstable
diff --git a/.github/workflows/wasp-test.yml b/.github/workflows/wasp-test.yml
index 15dae11..ecfd1d4 100644
--- a/.github/workflows/wasp-test.yml
+++ b/.github/workflows/wasp-test.yml
@@ -17,7 +17,7 @@ jobs:
           filters: |
             src:
               - 'wasp/**'
-      - uses: cachix/install-nix-action@v18
+      - uses: cachix/install-nix-action@v30
         if: steps.changes.outputs.src == 'true'
         with:
           nix_path: nixpkgs=channel:nixos-unstable