diff --git a/.github/workflows/build_test.yml b/.github/workflows/build_test.yml
index 4e69e57a..f6fba27b 100644
--- a/.github/workflows/build_test.yml
+++ b/.github/workflows/build_test.yml
@@ -18,7 +18,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-#          - { os: ubuntu-24.04, compiler: clang-18 }
+          - { os: ubuntu-24.04, compiler: clang-18 }
           - { os: ubuntu-24.04, compiler: gcc-14 }
 #          - { os: macos-13, compiler: clang-14 }
 #          - { os: macos-14, compiler: armv8-clang-14 }
@@ -50,7 +50,7 @@ jobs:
       - name: conan config
         run: conan config install .github/config/${{ matrix.os }}-${{ matrix.compiler }}/conan
       - name: conan install
-        run: conan install . --output-folder=build --build=missing -s build_type=Debug
+        run: conan install . --output-folder=build --build=never
 
       - name: cache
         uses: actions/cache@v4
@@ -68,7 +68,7 @@ jobs:
           cmake -B build -S .
           -DCMAKE_TOOLCHAIN_FILE="conan_toolchain.cmake"
           -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
-          -DCMAKE_BUILD_TYPE=Debug
+          -DCMAKE_BUILD_TYPE=Release
           -DCMAKE_CXX_FLAGS="-Werror"
           -DCMAKE_INSTALL_PREFIX=install
           -DODR_TEST=ON
@@ -79,15 +79,15 @@ jobs:
           cmake -B build -S .
           -DCMAKE_TOOLCHAIN_FILE="conan_toolchain.cmake"
           -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
-          -DCMAKE_BUILD_TYPE=Debug
+          -DCMAKE_BUILD_TYPE=Release
           -DCMAKE_INSTALL_PREFIX=install
           -DODR_TEST=ON
 
       - name: build
-        run: cmake --build build --config Debug
+        run: cmake --build build --config Release
 
       - name: install
-        run: cmake --build build --target install --config Debug
+        run: cmake --build build --target install --config Release
 
       - name: upload binaries to github
         uses: actions/upload-artifact@v4
@@ -96,7 +96,7 @@ jobs:
           path: |
             install
             build/test/odr_test
-            build/test/Debug/odr_test.exe
+            build/test/Release/odr_test.exe
 
   docker:
     if: false
@@ -163,7 +163,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-#          - { os: ubuntu-24.04, compiler: clang-18 }
+          - { os: ubuntu-24.04, compiler: clang-18 }
           - { os: ubuntu-24.04, compiler: gcc-14 }
 #          - { os: macos-13, compiler: clang-14 }
 #          - { os: macos-14, compiler: armv8-clang-14 }
@@ -208,11 +208,11 @@ jobs:
 
       - name: fix artifact permissions
         if: runner.os == 'Windows'
-        run:  chmod +x build/test/Debug/odr_test.exe
+        run:  chmod +x build/test/Release/odr_test.exe
       - name: test
         if: runner.os == 'Windows'
         working-directory: build/test
-        run: ./Debug/odr_test.exe
+        run: ./Release/odr_test.exe
 
       - name: tidy public test outputs
         run: python3 -u test/scripts/tidy_output.py build/test/output/odr-public/output
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 18411767..1288f7d6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.15)
 
 project(odr LANGUAGES C CXX)
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
diff --git a/test/src/pdf2htmlEX_wrapper_test.cpp b/test/src/pdf2htmlEX_wrapper_test.cpp
index 40a1d032..a8bd701a 100644
--- a/test/src/pdf2htmlEX_wrapper_test.cpp
+++ b/test/src/pdf2htmlEX_wrapper_test.cpp
@@ -1,7 +1,7 @@
-#include <execinfo.h>
 #include <filesystem>
 #include <iostream>
 #include <optional>
+#include <stacktrace>
 #include <string>
 
 #include <gtest/gtest.h>
@@ -20,17 +20,6 @@ namespace fs = std::filesystem;
 
 using pdf2htmlEXWrapperTests = ::testing::TestWithParam<std::string>;
 
-static void print_backtrace() {
-  void *array[10];
-  int size = backtrace(array, 10);
-  char **symbols = backtrace_symbols(array, size);
-  for (int i = 0; i < size; i++) {
-    std::cerr << symbols[i] << std::endl;
-  }
-  free(symbols);
-  std::cerr << std::flush;
-}
-
 TEST_P(pdf2htmlEXWrapperTests, html) {
   const std::string test_file_path = GetParam();
   const TestFile test_file = TestData::test_file(test_file_path);
@@ -62,6 +51,7 @@ TEST_P(pdf2htmlEXWrapperTests, html) {
 
   std::cout << "Calling pdf2htmlEX_wrapper" << std::endl << std::flush;
   try {
+    std::this_thread::set_capture_stacktraces_at_throw(true);
     Html html = odr::internal::html::pdf2htmlEX_wrapper(
         test_file.path, output_path, config, password);
     std::cout << "Returned from pdf2htmlEX_wrapper" << std::endl << std::flush;
@@ -69,21 +59,11 @@ TEST_P(pdf2htmlEXWrapperTests, html) {
       EXPECT_TRUE(fs::is_regular_file(html_page.path));
       EXPECT_LT(0, fs::file_size(html_page.path));
     }
-  } catch (const std::exception &e) {
-    std::cerr << "Exception in pdf2htmlEX_wrapper: " << std::endl
-              << e.what() << std::endl
-              << std::flush;
-    print_backtrace();
-    throw e;
-  } catch (const std::string &e) {
-    std::cerr << "Exception in pdf2htmlEX_wrapper: " << std::endl
-              << e << std::endl
-              << std::flush;
-    print_backtrace();
-    throw e;
   } catch (...) {
-    std::cerr << "Exception in pdf2htmlEX_wrapper!" << std::endl << std::flush;
-    print_backtrace();
+    std::stacktrace trace = std::stacktrace::from_current_exception();
+    std::cerr << "Exception in pdf2htmlEX_wrapper!" << std::endl;
+    std::cerr << trace << std::endl << std::flush;
+
     throw std::runtime_error("Unexpected error");
   }
   std::cerr << "End of test" << std::endl << std::flush;