diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5dc3575..9bf2e7a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,16 +21,16 @@ 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
 
       - name: Cache dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{ steps.setup-haskell.outputs.stack-root }}/snapshots
           key: ${{ runner.os }}-ghc-${{ matrix.resolver }}-${{ hashFiles('doctest-parallel.cabal') }}
@@ -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 }}
@@ -104,7 +104,7 @@ jobs:
           mv cabal.project.freeze frozen
 
       - name: Cache dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{ steps.setup-haskell.outputs.cabal-store || steps.setup-haskell-head.outputs.cabal-store }}
           key: ${{ runner.os }}-ghc-${{ matrix.ghc }}-${{ hashFiles('frozen') }}
@@ -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: |
@@ -186,7 +186,7 @@ jobs:
           mv cabal.project.freeze frozen
 
       - name: Cache dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: $HOME/.cabal/store
           key: ${{ runner.os }}-cachebust1-hls-${{ matrix.tools.ghc }}-${{ matrix.tools.cabal }}-${{ matrix.tools.hls }}-${{ matrix.tools.ghcup }}-${{ hashFiles('frozen') }}
@@ -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: |