diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cda0f7274..8b87b34e3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
       - id: set-matrix
         name: Generate Nix Matrix
         run: |
@@ -36,7 +36,7 @@ jobs:
       matrix: ${{ fromJSON(needs.nix-matrix.outputs.matrix) }}
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
       - uses: cachix/cachix-action@v15
         with:
           name: poetry2nix
@@ -54,7 +54,7 @@ jobs:
           - macos-14
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
       - uses: cachix/cachix-action@v15
         with:
           name: poetry2nix
@@ -77,7 +77,7 @@ jobs:
           - macos-14
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
       - uses: cachix/cachix-action@v15
         with:
           name: poetry2nix
@@ -95,7 +95,7 @@ jobs:
           - macos-14
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
       - uses: cachix/cachix-action@v15
         with:
           name: poetry2nix