diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index e0d38d2b1..d7fc58c1f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -27,13 +27,34 @@ jobs:
         submodules: true
     - name: Add wget
       run: apt-get update && apt-get install -y wget
-    - name: Setup cmake
+    - name: Get cmake
       uses: jwlawson/actions-setup-cmake@v1.11
     - name: Configure
       run: cmake -S . -B build -DCLI11_CUDA_TESTS=ON
     - name: Build
       run: cmake --build build -j2
 
+
+  boost-build:
+    name: Boost build
+    runs-on: ubuntu-latest
+    container: zouzias/boost:1.76.0
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        submodules: true
+    - name: Add deps
+      run: apt-get update && apt-get install make
+    - name: Get CMake
+      uses: jwlawson/actions-setup-cmake@v1.11
+    - name: Configure
+      run: cmake -S . -B build -DCLI11_BOOST=ON
+    - name: Build
+      run: cmake --build build -j2
+    - name: Run tests
+      run: ctest --output-on-failure
+      working-directory: build
+
   cmake-config:
     name: CMake config check
     runs-on: ubuntu-latest
diff --git a/tests/OptionalTest.cpp b/tests/OptionalTest.cpp
index 6b07f01c7..5ea20be9d 100644
--- a/tests/OptionalTest.cpp
+++ b/tests/OptionalTest.cpp
@@ -258,11 +258,13 @@ TEST_CASE_METHOD(TApp, "BoostOptionalVector", "[optional]") {
            "-v,--vec", [&opt](const std::vector<int> &v) { opt = v; }, "some vector")
         ->expected(3);
     run();
-    CHECK(!opt);
+    bool checkOpt = static_cast<bool>(opt);
+    CHECK(!checkOpt);
 
     args = {"-v", "1", "4", "5"};
     run();
-    CHECK(opt);
+    checkOpt = static_cast<bool>(opt);
+    CHECK(checkOpt);
     std::vector<int> expV{1, 4, 5};
     CHECK(expV == *opt);
 }
@@ -272,14 +274,17 @@ TEST_CASE_METHOD(TApp, "BoostOptionalVectorEmpty", "[optional]") {
     app.add_option<decltype(opt), std::vector<int>>("-v,--vec", opt)->expected(0, 3)->allow_extra_args();
     // app.add_option("-v,--vec", opt)->expected(0, 3)->allow_extra_args();
     run();
-    CHECK(!opt);
+    bool checkOpt = static_cast<bool>(opt);
+    CHECK(!checkOpt);
     args = {"-v"};
     opt = std::vector<int>{4, 3};
     run();
-    CHECK(!opt);
+    checkOpt = static_cast<bool>(opt);
+    CHECK(!checkOpt);
     args = {"-v", "1", "4", "5"};
     run();
-    CHECK(opt);
+    checkOpt = static_cast<bool>(opt);
+    CHECK(checkOpt);
     std::vector<int> expV{1, 4, 5};
     CHECK(expV == *opt);
 }
@@ -289,14 +294,17 @@ TEST_CASE_METHOD(TApp, "BoostOptionalVectorEmptyDirect", "[optional]") {
     app.add_option_no_stream("-v,--vec", opt)->expected(0, 3)->allow_extra_args();
     // app.add_option("-v,--vec", opt)->expected(0, 3)->allow_extra_args();
     run();
-    CHECK(!opt);
+    bool checkOpt = static_cast<bool>(opt);
+    CHECK(!checkOpt);
     args = {"-v"};
     opt = std::vector<int>{4, 3};
     run();
-    CHECK(!opt);
+    checkOpt = static_cast<bool>(opt);
+    CHECK(!checkOpt);
     args = {"-v", "1", "4", "5"};
     run();
-    CHECK(opt);
+    checkOpt = static_cast<bool>(opt);
+    CHECK(checkOpt);
     std::vector<int> expV{1, 4, 5};
     CHECK(expV == *opt);
 }