diff --git a/.github/workflows/cpp-tests.yml b/.github/workflows/cpp-tests.yml
index 9a523ace..3ec79d90 100644
--- a/.github/workflows/cpp-tests.yml
+++ b/.github/workflows/cpp-tests.yml
@@ -29,6 +29,11 @@ jobs:
           repository: lf-lang/lingua-franca
           submodules: true
           ref: ${{ inputs.compiler-ref }}
+      - name: Install boost on Ubuntu
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y boost boost-dev
+        if: matrix.platform == 'ubuntu-latest'
       - name: Set cpp runtime version
         run: |
             echo ${{ inputs.runtime-ref }} > org.lflang/src/org/lflang/generator/cpp/cpp-runtime-version.txt
diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index ba68ca42..1c09b4f1 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-latest]
 
     steps:
     - uses: actions/checkout@v1
@@ -23,6 +23,11 @@ jobs:
         sudo apt-get update
         sudo apt-get install -y clang-tidy
       if: matrix.os == 'ubuntu-latest'
+    - name: Install boost on Ubuntu
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y libboost-all-dev
+      if: matrix.platform == 'ubuntu-latest'
     - name: configure
       run: |
         mkdir build
@@ -35,7 +40,7 @@ jobs:
         cmake --build build --target examples
 
   lf-tests-pull-request:
-    uses: lf-lang/lingua-franca/.github/workflows/cpp-tests.yml@master
+    uses: lf-lang/lingua-franca/.github/workflows/cpp-tests.yml@cpp-boost
     with:
       runtime-ref: ${{github.ref}}
       compiler-ref: master