diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0ce4dbe..26dd551 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ jobs:
     name: "Smoke test"
     strategy:
       matrix:
-        os: [ubuntu-20.04, macos-11]
+        os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     timeout-minutes: 30
     steps:
@@ -23,7 +23,9 @@ jobs:
           sudo apt-get install -y autoconf automake
       - name: "Install dependencies (macOS)"
         if: runner.os == 'macOS'
-        run: brew install autoconf automake
+        run: |
+            brew install autoconf automake libtool
+            autoupdate
       - name: "Build"
         run: |
           autoreconf -fis