diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index e0d460ce..4c3150d1 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -1,3 +1,4 @@
+
 name: Linux
 on:
   workflow_dispatch:
@@ -47,10 +48,10 @@ jobs:
 
     - name: Install LLVM and Clang
       if: matrix.sys.compiler == 'clang'
-      uses: egor-tensin/setup-clang@v1
+      uses: KyleMayes/install-llvm-action@v2
       with:
         version: ${{matrix.sys.version}}
-        platform: x64
+        arch: x64
 
     - name: Install the specified standard library for clang
       if: matrix.sys.compiler == 'clang'
@@ -98,7 +99,8 @@ jobs:
           -DBUILD_TESTS=ON \
           -DBUILD_EXAMPLES=ON \
           -DCMAKE_C_COMPILER_LAUNCHER=sccache \
-          -DCMAKE_CXX_COMPILER_LAUNCHER=sccache
+          -DCMAKE_CXX_COMPILER_LAUNCHER=sccache \
+          -DUSE_SANITIZER="address;undefined;leak"
 
     - name: Build library
       working-directory: build
@@ -112,13 +114,30 @@ jobs:
       working-directory: build
       run: cmake --build . --config ${{matrix.config.name}} --target test_sparrow_lib --parallel 8
 
+    - name: fine-tune asan options
+      # in asan we get an error from std::regex. ignore it.
+      run: |
+        echo "ASAN_OPTIONS=log_path=asan_log_:alloc_dealloc_mismatch=0:halt_on_error=0:handle_abort=0:exitcode=0" >> $GITHUB_ENV
+        echo "LEAK_OPTIONS=log_path=leak_log_" >> $GITHUB_ENV
+
     - name: Run sccache stat for check
       shell: bash
       run: ${SCCACHE_PATH} --show-stats
 
     - name: Run tests
       working-directory: build
-      run: cmake --build . --config ${{matrix.config.name}} --target run_tests_with_junit_report
+      run: |
+        export ASAN_OPTIONS=log_path=asan_log_:alloc_dealloc_mismatch=0:halt_on_error=0:handle_abort=0:exitcode=0
+        export LEAK_OPTIONS=log_path=leak_log_
+        cmake --build . --config ${{matrix.config.name}} --target run_tests_with_junit_report
+      # env:
+      #   # log_path is set to the path where ASAN will write the error report (seems ineffective)
+      #   # alloc_dealloc_mismatch is set to 0 to deactivate unwanted ASAN warnings.
+      #   # halt_on_error is set to 0 to avoid crashing the program after printing the first error report.
+      #   # handle_abort is set to 0 to deactivate calls are handled as crashes by ASAN.
+      #   # exitcode is set to 0 to avoid reporting the build as failed if ASAN detects an error.
+      #   ASAN_OPTIONS: log_path=asan_log_:alloc_dealloc_mismatch=0:halt_on_error=0:handle_abort=0:exitcode=0
+      #   LEAK_OPTIONS: log_path=leak_log_
 
     - name: Upload test results
       uses: actions/upload-artifact@v4
@@ -127,6 +146,23 @@ jobs:
         name: test_sparrow_lib_report_Linux_${{ matrix.sys.compiler }}_${{ matrix.sys.version }}_${{ matrix.sys.stdlib }}_${{ matrix.config.name }}_date-polyfill_${{ matrix.sys.date-polyfill}}
         path: '**/test_sparrow_lib_report.xml'
 
+
+    - name: Upload ASAN log
+      if: always()
+      uses: actions/upload-artifact@v4
+      with:
+        name: asan-log-${{ matrix.sys.compiler }}-${{ matrix.sys.version }}-${{ matrix.config.name }}-${{ matrix.sys.date-polyfill }}
+        path: '**/asan_log_*'
+
+    - name: Upload LEAK log
+      if: always()
+      uses: actions/upload-artifact@v4
+      with:
+        name: leak-log-${{ matrix.sys.compiler }}-${{ matrix.sys.version }}-${{ matrix.config.name }}-${{ matrix.sys.date-polyfill }}
+        path: '**/leak_log_*'
+
+
     - name: Run all examples
       working-directory: build
       run: cmake --build . --config ${{matrix.config.name}} --target run_examples
+
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 5a5ab9f0..f9a078cd 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -180,7 +180,10 @@ jobs:
         $SPARROW_ADDITIONAL_OPTIONS \
         -DCMAKE_C_COMPILER_LAUNCHER=ccache \
         -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
-        -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreadedDLL
+        -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreadedDLL \
+        ${{env.CMAKE_SANITIZER}}
+      env:
+        CMAKE_SANITIZER: ${{ (matrix.config.name == 'Debug' && matrix.sys.compiler == 'msvc') && '-DUSE_SANITIZER=address' || '' }}
 
     - name: Build library
       working-directory: build
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index c6cecb39..e07c74d1 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -199,7 +199,10 @@ target_link_options(${test_target}
     PRIVATE
         $<$<BOOL:USE_SANITIZER>:${SANITIZER_LINK_OPTIONS}>)
 # We do not use non-standard C++
-set_target_properties(${test_target} PROPERTIES CMAKE_CXX_EXTENSIONS OFF)
+set_target_properties(${test_target} 
+    PROPERTIES
+        CMAKE_CXX_EXTENSIONS OFF
+        MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
 target_compile_features(${test_target} PRIVATE cxx_std_20)
 
 add_custom_target(run_tests