diff --git a/.github/workflows/Optional-Nix-dev-env-macOS.yml b/.github/workflows/Optional-Nix-dev-env-macOS.yml
index 005d84f43..e3f4042c4 100644
--- a/.github/workflows/Optional-Nix-dev-env-macOS.yml
+++ b/.github/workflows/Optional-Nix-dev-env-macOS.yml
@@ -28,7 +28,7 @@ jobs:
       with:
         nix_path: nixpkgs=channel:nixos-unstable
     - name: "Install Cachix"
-      uses: cachix/cachix-action@v12
+      uses: cachix/cachix-action@v13
       with:
         name: ${{ env.cachixAccount }}
         signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
diff --git a/.github/workflows/Optional-Nix-dev-env-main.yml b/.github/workflows/Optional-Nix-dev-env-main.yml
index ce08899e5..90e9256f6 100644
--- a/.github/workflows/Optional-Nix-dev-env-main.yml
+++ b/.github/workflows/Optional-Nix-dev-env-main.yml
@@ -72,7 +72,7 @@ jobs:
       with:
         nix_path: nixpkgs=channel:nixos-unstable
     - name: "Install Cachix"
-      uses: cachix/cachix-action@v12
+      uses: cachix/cachix-action@v13
       with:
         name: ${{ env.cachixAccount }}
         signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
@@ -96,7 +96,7 @@ jobs:
       with:
         nix_path: nixpkgs=channel:nixos-unstable
     - name: "Install Cachix"
-      uses: cachix/cachix-action@v12
+      uses: cachix/cachix-action@v13
       with:
         name: ${{ env.cachixAccount }}
         signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
@@ -129,7 +129,7 @@ jobs:
       with:
         nix_path: nixpkgs=channel:nixos-unstable
     - name: "Install Cachix"
-      uses: cachix/cachix-action@v12
+      uses: cachix/cachix-action@v13
       with:
         name: ${{ env.cachixAccount }}
         signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'