diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f0b48761..097b6728 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     timeout-minutes: 50
     strategy:
       fail-fast: false
@@ -53,6 +53,7 @@ jobs:
       with:
         java-version: 21
         distribution: temurin
+    - uses: sbt/setup-sbt@8a071aa780c993c7a204c785d04d3e8eb64ef272 # v1.1.0
     - uses: actions/setup-node@v4
       with:
         node-version: 22
@@ -74,6 +75,7 @@ jobs:
       with:
         java-version: 8
         distribution: temurin
+    - uses: sbt/setup-sbt@8a071aa780c993c7a204c785d04d3e8eb64ef272 # v1.1.0
     - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
     - name: Install pandoc
       run: ./.github/install_pandoc.sh
diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index 2c186979..173c6e0c 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -14,6 +14,7 @@ jobs:
       with:
         java-version: 8
         distribution: temurin
+    - uses: sbt/setup-sbt@8a071aa780c993c7a204c785d04d3e8eb64ef272 # v1.1.0
     - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
       with:
         ref: ${{ github.event.pull_request.head.sha }}