diff --git a/.github/workflows/osrm-backend.yml b/.github/workflows/osrm-backend.yml
index dc1c69784..3f9eaf389 100644
--- a/.github/workflows/osrm-backend.yml
+++ b/.github/workflows/osrm-backend.yml
@@ -192,14 +192,14 @@ jobs:
           #   CXXCOMPILER: clang++-15
           #   CUCUMBER_TIMEOUT: 60000
 
-          - name: clang-16-debug-clang-tidy
+          - name: clang-18-debug-clang-tidy
             continue-on-error: false
             node: 18
             runs-on: ubuntu-24.04
             BUILD_TOOLS: ON
             BUILD_TYPE: Debug
-            CCOMPILER: clang-16
-            CXXCOMPILER: clang++-16
+            CCOMPILER: clang-18
+            CXXCOMPILER: clang++-18
             CUCUMBER_TIMEOUT: 60000
             ENABLE_CLANG_TIDY: ON
 
diff --git a/third_party/sol2/include/sol/sol.hpp b/third_party/sol2/include/sol/sol.hpp
index 8b0b7d36e..1fc55bf8d 100644
--- a/third_party/sol2/include/sol/sol.hpp
+++ b/third_party/sol2/include/sol/sol.hpp
@@ -19416,7 +19416,13 @@ namespace sol { namespace function_detail {
 		}
 
 		template <bool is_yielding, bool no_trampoline>
-		static int call(lua_State* L) noexcept(std::is_nothrow_copy_assignable_v<T>) {
+		static int call(lua_State* L) 
+#if SOL_IS_ON(SOL_COMPILER_CLANG)
+		// apparent regression in clang 18 - llvm/llvm-project#91362
+#else
+			noexcept(std::is_nothrow_copy_assignable_v<T>)
+#endif
+		{
 			int nr;
 			if constexpr (no_trampoline) {
 				nr = real_call(L);
@@ -19456,7 +19462,13 @@ namespace sol { namespace function_detail {
 		}
 
 		template <bool is_yielding, bool no_trampoline>
-		static int call(lua_State* L) noexcept(std::is_nothrow_copy_assignable_v<T>) {
+		static int call(lua_State* L) 
+#if SOL_IS_ON(SOL_COMPILER_CLANG)
+		// apparent regression in clang 18 - llvm/llvm-project#91362
+#else
+			noexcept(std::is_nothrow_copy_assignable_v<T>)
+#endif
+		{
 			int nr;
 			if constexpr (no_trampoline) {
 				nr = real_call(L);