diff --git a/platformio.ini b/platformio.ini
index c45df3d..9a68b05 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -63,7 +63,7 @@ lib_deps =
   mathieucarbou/AsyncTCP @ 3.2.14
   ; https://github.com/mathieucarbou/AsyncTCPSock/archive/refs/tags/v1.0.3-dev.zip
   mathieucarbou/ESPAsyncWebServer @ 3.3.22
-  mathieucarbou/MycilaConfig @ 5.0.0
+  mathieucarbou/MycilaConfig @ 6.0.1
   mathieucarbou/MycilaDS18 @ 4.1.0
   mathieucarbou/MycilaESPConnect @ 6.1.1
   mathieucarbou/MycilaEasyDisplay @ 3.0.2
diff --git a/src/init/REST.cpp b/src/init/REST.cpp
index 3452f66..2ec08b6 100644
--- a/src/init/REST.cpp
+++ b/src/init/REST.cpp
@@ -9,6 +9,7 @@
 #include <YaSolRWebsite.h>
 
 #include <map>
+#include <string>
 
 Mycila::Task initRestApiTask("Init REST API", [](void* params) {
   logger.info(TAG, "Initializing REST API");
@@ -168,12 +169,12 @@ Mycila::Task initRestApiTask("Init REST API", [](void* params) {
 
   webServer
     .on("/api/config", HTTP_POST, [](AsyncWebServerRequest* request) {
-      std::map<const char*, String> settings;
+      std::map<const char*, std::string> settings;
       for (size_t i = 0, max = request->params(); i < max; i++) {
         const AsyncWebParameter* p = request->getParam(i);
         if (p->isPost() && !p->isFile()) {
           const char* keyRef = config.keyRef(p->name().c_str());
-          settings[keyRef] = p->value();
+          settings[keyRef] = p->value().c_str();
         }
       }
       request->send(200);