diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 189685c7..8395f50c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
         ghc: ["9.4.4"]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - uses: haskell/actions/setup@v2
       name: Setup Haskell
@@ -43,7 +43,7 @@ jobs:
         cabal: ["3.8"]
         ghc: ["9.4.4"]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - uses: haskell/actions/setup@v2
       name: Setup Haskell
@@ -78,7 +78,7 @@ jobs:
         cabal: ["3.8"]
         ghc: ["9.4.4"]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - uses: haskell/actions/setup@v2
       name: Setup Haskell
@@ -113,7 +113,7 @@ jobs:
         cabal: ["3.8"]
         ghc: ["9.4.4"]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - uses: haskell/actions/setup@v2
       name: Setup Haskell
@@ -139,7 +139,7 @@ jobs:
         cabal: ["3.8"]
         ghc: ["9.4.4"]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - uses: haskell/actions/setup@v2
       name: Setup Haskell