diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 57c8620..8c42484 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -24,10 +24,10 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install Nix
-      uses: cachix/install-nix-action@v22
+      uses: cachix/install-nix-action@v25
       with:
         nix_path: nixpkgs=channel:nixpkgs-unstable
 
@@ -99,10 +99,10 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install Nix
-      uses: cachix/install-nix-action@v22
+      uses: cachix/install-nix-action@v25
       with:
         nix_path: nixpkgs=channel:${{ matrix.nixpkgs-channel }}
         install_url: ${{ matrix.nix_install_url }}
@@ -147,10 +147,10 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install Nix
-      uses: cachix/install-nix-action@v22
+      uses: cachix/install-nix-action@v25
       with:
         nix_path: nixpkgs=channel:nixpkgs-unstable
 
diff --git a/.github/workflows/sync-channels.yaml b/.github/workflows/sync-channels.yaml
index a5ea71c..e01e3a2 100644
--- a/.github/workflows/sync-channels.yaml
+++ b/.github/workflows/sync-channels.yaml
@@ -16,13 +16,13 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         persist-credentials: false
         ref: master
 
     - name: Install Nix
-      uses: cachix/install-nix-action@v22
+      uses: cachix/install-nix-action@v25
       with:
         nix_path: nixpkgs=channel:nixpkgs-unstable
 
diff --git a/.github/workflows/update-stable.yaml b/.github/workflows/update-stable.yaml
index e4c0770..8f8de30 100644
--- a/.github/workflows/update-stable.yaml
+++ b/.github/workflows/update-stable.yaml
@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           persist-credentials: false
           fetch-depth: 0