diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 851e5954..68a819da 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -31,7 +31,8 @@ jobs:
       fail-fast: false
       matrix:
         os:
-        - ubuntu-latest
+        # LLGo 1.0.8's setup action uses apt-key and Python 3.12 packages.
+        - ubuntu-24.04
         - macos-latest
     steps:
     - uses: actions/checkout@v4
@@ -45,8 +46,8 @@ jobs:
       uses: actions/checkout@v4
       with:
         repository: xgo-dev/llgo
-        # Native variable support from xgo-dev/llgo#2882 (immutable compiler pin).
-        ref: dbce82ab63e3c165689027dfd244140212791b53
+        # Test the minimum supported LLGo release (>= 1.0.8).
+        ref: c171abfa130108bc6451e01fcf15a8a3474eb0a7 # v1.0.8
         path: .llgo
 
     - name: Set up LLGo dependencies
@@ -57,7 +58,7 @@ jobs:
     - name: Build LLGo
       working-directory: .llgo
       run: |
-        # Use the LLVM binding version declared by the pinned compiler.
+        # Assert llvm-config matches the LLVM 22 required by LLGo v1.0.8.
         llvm_version="$(llvm-config --version)"
         test "${llvm_version%%.*}" = 22
         export CGO_CPPFLAGS="$(llvm-config --cflags)"