diff --git a/c/CMakeLists.txt b/c/CMakeLists.txt
index dac330b955..21d399eee8 100644
--- a/c/CMakeLists.txt
+++ b/c/CMakeLists.txt
@@ -23,6 +23,8 @@ include(BuildUtils)
 project(adbc
         VERSION "${ADBC_BASE_VERSION}"
         LANGUAGES C CXX)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 include(CTest)
 
diff --git a/c/driver/postgresql/copy/writer.h b/c/driver/postgresql/copy/writer.h
index 320b89e6c7..32c894b5df 100644
--- a/c/driver/postgresql/copy/writer.h
+++ b/c/driver/postgresql/copy/writer.h
@@ -17,10 +17,12 @@
 
 #pragma once
 
+#include <charconv>
 #include <cinttypes>
 #include <limits>
 #include <memory>
 #include <string>
+#include <string_view>
 #include <utility>
 #include <vector>
 
@@ -237,10 +239,9 @@ class PostgresCopyNumericFieldWriter : public PostgresCopyFieldWriter {
       const int start_pos =
           digits_remaining < kDecDigits ? 0 : digits_remaining - kDecDigits;
       const size_t len = digits_remaining < 4 ? digits_remaining : kDecDigits;
-      char substr[kDecDigits + 1];
-      std::memcpy(substr, decimal_string + start_pos, len);
-      substr[len] = '\0';
-      int16_t val = static_cast<int16_t>(std::atoi(substr));
+      const std::string_view substr{decimal_string + start_pos, len};
+      int16_t val{};
+      std::from_chars(substr.data(), substr.data() + substr.size(), val);
 
       if (val == 0) {
         if (!seen_decimal && truncating_trailing_zeros) {
diff --git a/ci/scripts/cpp_clang_tidy.sh b/ci/scripts/cpp_clang_tidy.sh
index 5c972ffbd5..5074223b6a 100755
--- a/ci/scripts/cpp_clang_tidy.sh
+++ b/ci/scripts/cpp_clang_tidy.sh
@@ -59,7 +59,6 @@ build_subproject() {
         -DADBC_DRIVER_SNOWFLAKE="${BUILD_DRIVER_SNOWFLAKE}" \
         -DADBC_USE_ASAN="${ADBC_USE_ASAN}" \
         -DADBC_USE_UBSAN="${ADBC_USE_UBSAN}" \
-        -DCMAKE_CXX_STANDARD=17 \
         -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
         -DCMAKE_BUILD_TYPE="${CMAKE_BUILD_TYPE}" \
         -DCMAKE_INSTALL_LIBDIR=lib \