diff --git a/.github/workflows/Cabal-Linux-Remote.yml b/.github/workflows/Cabal-Linux-Remote.yml
index c9a4dfc..0047438 100644
--- a/.github/workflows/Cabal-Linux-Remote.yml
+++ b/.github/workflows/Cabal-Linux-Remote.yml
@@ -44,7 +44,7 @@ jobs:
 
       # Still required for Remote
       - name: "Install Nix"
-        uses: cachix/install-nix-action@v14.1
+        uses: cachix/install-nix-action@v15
         if: matrix.packageRoot == 'hnix-store-remote'
 
       # Remote: Enabling testsuite, because it requires networking in the default Nix environment.
diff --git a/.github/workflows/On-Release-Cabal-Linux.yml b/.github/workflows/On-Release-Cabal-Linux.yml
index 951d7c6..35a5fe9 100644
--- a/.github/workflows/On-Release-Cabal-Linux.yml
+++ b/.github/workflows/On-Release-Cabal-Linux.yml
@@ -43,7 +43,7 @@ jobs:
 
       # Still required for Remote
       - name: "Install Nix"
-        uses: cachix/install-nix-action@v14.1
+        uses: cachix/install-nix-action@v15
         if: matrix.packageRoot == 'hnix-store-remote'
 
       # Remote: Enabling testsuite, because it requires networking in the default Nix environment.
diff --git a/.github/workflows/Optional-Nix-dev-env-main.yml b/.github/workflows/Optional-Nix-dev-env-main.yml
index 0e3d14e..a576f64 100644
--- a/.github/workflows/Optional-Nix-dev-env-main.yml
+++ b/.github/workflows/Optional-Nix-dev-env-main.yml
@@ -32,7 +32,7 @@ jobs:
       with:
         submodules: recursive
     - name: "Install Nix"
-      uses: cachix/install-nix-action@v14.1
+      uses: cachix/install-nix-action@v15
       with:
         nix_path: nixpkgs=channel:nixos-unstable
     - name: "Install Cachix"