diff --git a/ci/setup-prerequisites-unittest.sh b/ci/setup-prerequisites-unittest.sh
index d054242..269b6b5 100755
--- a/ci/setup-prerequisites-unittest.sh
+++ b/ci/setup-prerequisites-unittest.sh
@@ -35,5 +35,5 @@ cd build
 cmake .. -GNinja -DCMAKE_INSTALL_PREFIX=/tmp/gtest_install
 sudo ninja install
 rm -rf *
-cmake .. -GNinja -DCMAKE_CXX_COMPILER=clang++-16 -DCMAKE_CXX_FLAGS=-stdlib=libc++ -DCMAKE_INSTALL_PREFIX=/tmp/gtest_install_libcxx
+cmake .. -GNinja -DCMAKE_CXX_COMPILER=clang++-18 -DCMAKE_CXX_FLAGS=-stdlib=libc++ -DCMAKE_INSTALL_PREFIX=/tmp/gtest_install_libcxx
 sudo ninja install
diff --git a/ci/unittest.py b/ci/unittest.py
index 0b2f76d..85715fe 100644
--- a/ci/unittest.py
+++ b/ci/unittest.py
@@ -114,7 +114,7 @@ def build_and_test(runner: MatrixRunner):
 def run_linux_matrix():
     MatrixRunner(
         matrix = {
-            "compiler": ["g++-10", "clang++-16"],
+            "compiler": ["g++-10", "clang++-18"],
             "stdlib": ["libstdc++", "libc++"],
             "sanitizers": ["OFF", "ON"],
             "build_type": ["Debug", "RelWithDebInfo"],