diff --git a/.github/workflows/flake-checks.yml b/.github/workflows/flake-checks.yml
index c7f217db..82eb04cb 100644
--- a/.github/workflows/flake-checks.yml
+++ b/.github/workflows/flake-checks.yml
@@ -4,18 +4,18 @@ jobs:
   check-format:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 1
-      - uses: cachix/install-nix-action@v20
+      - uses: cachix/install-nix-action@v27
       - name: check if flake complies with default style
         run: nix fmt -- -c .
   check-eval:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 1
-      - uses: cachix/install-nix-action@v20
+      - uses: cachix/install-nix-action@v27
       - name: check if flake evaluates
         run: nix flake check
diff --git a/.github/workflows/flake-update-inputs.yml b/.github/workflows/flake-update-inputs.yml
index e67df1be..fb422940 100644
--- a/.github/workflows/flake-update-inputs.yml
+++ b/.github/workflows/flake-update-inputs.yml
@@ -7,7 +7,7 @@ jobs:
   update-inputs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           ref: ${{ github.head_ref }}
           fetch-depth: 1
@@ -15,7 +15,7 @@ jobs:
         run: |
           git config --local user.email "github-actions[bot]@users.noreply.github.com"
           git config --local user.name "github-actions[bot]"
-      - uses: cachix/install-nix-action@v20
+      - uses: cachix/install-nix-action@v27
       - name: "flake: update inputs"
         run: nix flake update --commit-lock-file
       - name: "flake: check eval"