diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a8e99276..92ae43df 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
     steps:
     - uses: actions/checkout@v7
 
-    - uses: haskell-actions/setup@v2
+    - uses: haskell-actions/setup@v2.11.0
       name: Setup Haskell
       with:
         ghc-version: ${{ matrix.ghc }}
@@ -45,7 +45,7 @@ jobs:
     steps:
     - uses: actions/checkout@v7
 
-    - uses: haskell-actions/setup@v2
+    - uses: haskell-actions/setup@v2.11.0
       name: Setup Haskell
       with:
         ghc-version: ${{ matrix.ghc }}
@@ -80,7 +80,7 @@ jobs:
     steps:
     - uses: actions/checkout@v7
 
-    - uses: haskell-actions/setup@v2
+    - uses: haskell-actions/setup@v2.11.0
       name: Setup Haskell
       with:
         ghc-version: ${{ matrix.ghc }}
@@ -115,7 +115,7 @@ jobs:
     steps:
     - uses: actions/checkout@v7
 
-    - uses: haskell-actions/setup@v2
+    - uses: haskell-actions/setup@v2.11.0
       name: Setup Haskell
       with:
         ghc-version: ${{ matrix.ghc }}
@@ -141,7 +141,7 @@ jobs:
     steps:
     - uses: actions/checkout@v7
 
-    - uses: haskell-actions/setup@v2
+    - uses: haskell-actions/setup@v2.11.0
       name: Setup Haskell
       with:
         ghc-version: ${{ matrix.ghc }}