diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5dc3575..61f771d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,10 +21,10 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup Haskell
-        uses: haskell/actions/setup@v2
+        uses: haskell-actions/setup@v2.7.0
         id: setup-haskell
         with:
           enable-stack: true
@@ -77,11 +77,11 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup Haskell
         if: matrix.ghc != 'head'
-        uses: haskell/actions/setup@v2
+        uses: haskell-actions/setup@v2.7.0
         id: setup-haskell
         with:
           ghc-version: ${{ matrix.ghc }}
@@ -135,8 +135,8 @@ jobs:
   nix:
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
-    - uses: cachix/install-nix-action@v18
+    - uses: actions/checkout@v4
+    - uses: cachix/install-nix-action@v26
       with:
         nix_path: nixpkgs=channel:nixos-unstable
     - run: |
@@ -158,7 +158,7 @@ jobs:
           - {ghc: "9.6.2", cabal: "3.10.1.0", hls: "2.0.0.1", ghcup: "0.1.19.4"}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup Haskell
         run: |
@@ -217,7 +217,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Check dependencies for failures
         run: |