--- src/vspipe/vsjson.cpp.orig
+++ src/vspipe/vsjson.cpp
@@ -21,4 +21,8 @@
 #include "vsjson.h"
 #include <charconv>
+#include <iomanip>
+#include <limits>
+#include <locale>
+#include <sstream>
 
 static bool isAsciiPrintable(const std::string &s) {
@@ -31,5 +35,21 @@ static bool isAsciiPrintable(const std::string &s) {
 static std::string doubleToString(double v) {
+#if defined(__APPLE__) && defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 130300
+    std::ostringstream stream;
+    stream.imbue(std::locale::classic());
+    stream << std::fixed << std::setprecision(std::numeric_limits<double>::max_digits10) << v;
+
+    std::string result = stream.str();
+    if (const auto dot = result.find('.'); dot != std::string::npos) {
+        result.erase(result.find_last_not_of('0') + 1);
+        if (!result.empty() && result.back() == '.')
+            result.pop_back();
+    }
+    if (result == "-0")
+        result = "0";
+    return result;
+#else
     char buffer[100];
     auto res = std::to_chars(buffer, buffer + sizeof(buffer), v, std::chars_format::fixed);
     return std::string(buffer, res.ptr - buffer);
+#endif
 }
--- src/vspipe/vspipe.cpp.orig
+++ src/vspipe/vspipe.cpp
@@ -32,5 +32,9 @@
 #include <algorithm>
 #include <chrono>
 #include <charconv>
+#include <iomanip>
+#include <limits>
+#include <locale>
+#include <sstream>
 #include <filesystem>
 #include "../common/wave.h"
@@ -282,5 +286,21 @@ static void outputFrame(const VSFrame *frame, VSPipeOutputData *data) {
 static std::string doubleToString(double v) {
+#if defined(__APPLE__) && defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 130300
+    std::ostringstream stream;
+    stream.imbue(std::locale::classic());
+    stream << std::fixed << std::setprecision(std::numeric_limits<double>::max_digits10) << v;
+
+    std::string result = stream.str();
+    if (const auto dot = result.find('.'); dot != std::string::npos) {
+        result.erase(result.find_last_not_of('0') + 1);
+        if (!result.empty() && result.back() == '.')
+            result.pop_back();
+    }
+    if (result == "-0")
+        result = "0";
+    return result;
+#else
     char buffer[100];
     auto res = std::to_chars(buffer, buffer + sizeof(buffer), v, std::chars_format::fixed);
     return std::string(buffer, res.ptr - buffer);
+#endif
 }