diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index 62d5213..c52a00a 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -21,7 +21,7 @@ jobs:
           - "9.4.2"
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     - uses: haskell/actions/setup@v2.4
       id: setup-haskell-cabal
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index a6b0de1..eb8c032 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -6,7 +6,7 @@ jobs:
   tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: DeterminateSystems/nix-installer-action@main
       - uses: DeterminateSystems/magic-nix-cache-action@main
       - name: "Check `nix develop` shell"
diff --git a/.github/workflows/purescript.yml b/.github/workflows/purescript.yml
index a4401ad..c6a6f14 100644
--- a/.github/workflows/purescript.yml
+++ b/.github/workflows/purescript.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up a PureScript toolchain
         uses: purescript-contrib/setup-purescript@main