diff --git a/lib/ArduinoJson/CHANGELOG.md b/lib/ArduinoJson/CHANGELOG.md
index d140edaa2..c819bb791 100644
--- a/lib/ArduinoJson/CHANGELOG.md
+++ b/lib/ArduinoJson/CHANGELOG.md
@@ -1,6 +1,13 @@
 ArduinoJson: change log
 =======================
 
+v6.17.1 (2020-11-07)
+-------
+
+* Fixed error `ambiguous overload for 'operator|'` (issue #1411)
+* Fixed `operator|(MemberProxy, JsonObject)` (issue #1415)
+* Allowed more than 32767 values in non-embedded mode (issue #1414)
+
 v6.17.0 (2020-10-19)
 -------
 
diff --git a/lib/ArduinoJson/CONTRIBUTING.md b/lib/ArduinoJson/CONTRIBUTING.md
new file mode 100644
index 000000000..5d4b96cf9
--- /dev/null
+++ b/lib/ArduinoJson/CONTRIBUTING.md
@@ -0,0 +1,11 @@
+# Contribution to ArduinoJson
+
+First, thank you for taking the time to contribute to this project.
+
+You can submit changes via GitHub Pull Requests.
+
+Please:
+
+1. Unit test every change in behavior
+2. Use clang-format in "file" mode to format the code
+3. Consider using the Continuous Integration (Travis and AppVeyor)
diff --git a/lib/ArduinoJson/README.md b/lib/ArduinoJson/README.md
index 3516985e8..bbb852728 100644
--- a/lib/ArduinoJson/README.md
+++ b/lib/ArduinoJson/README.md
@@ -2,7 +2,7 @@
 
 ---
 
-[![arduino-library-badge](https://www.ardu-badge.com/badge/ArduinoJson.svg?version=6.17.0)](https://www.ardu-badge.com/ArduinoJson/6.17.0)
+[![arduino-library-badge](https://www.ardu-badge.com/badge/ArduinoJson.svg?version=6.17.1)](https://www.ardu-badge.com/ArduinoJson/6.17.1)
 [![Build Status](https://ci.appveyor.com/api/projects/status/m7s53wav1l0abssg/branch/6.x?svg=true)](https://ci.appveyor.com/project/bblanchon/arduinojson/branch/6.x)
 [![Build Status](https://travis-ci.org/bblanchon/ArduinoJson.svg?branch=6.x)](https://travis-ci.org/bblanchon/ArduinoJson)
 [![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/arduinojson.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:arduinojson)
diff --git a/lib/ArduinoJson/src/ArduinoJson/Array/ElementProxy.hpp b/lib/ArduinoJson/src/ArduinoJson/Array/ElementProxy.hpp
index 6d47ef371..41166b6ae 100644
--- a/lib/ArduinoJson/src/ArduinoJson/Array/ElementProxy.hpp
+++ b/lib/ArduinoJson/src/ArduinoJson/Array/ElementProxy.hpp
@@ -19,10 +19,13 @@ namespace ARDUINOJSON_NAMESPACE {
 template <typename TArray>
 class ElementProxy : public VariantOperators<ElementProxy<TArray> >,
                      public VariantShortcuts<ElementProxy<TArray> >,
-                     public Visitable {
+                     public Visitable,
+                     public VariantTag {
   typedef ElementProxy<TArray> this_type;
 
  public:
+  typedef VariantRef variant_type;
+
   FORCE_INLINE ElementProxy(TArray array, size_t index)
       : _array(array), _index(index) {}
 
diff --git a/lib/ArduinoJson/src/ArduinoJson/Configuration.hpp b/lib/ArduinoJson/src/ArduinoJson/Configuration.hpp
index 42ba498ef..32a6f339b 100644
--- a/lib/ArduinoJson/src/ArduinoJson/Configuration.hpp
+++ b/lib/ArduinoJson/src/ArduinoJson/Configuration.hpp
@@ -83,6 +83,18 @@
 #define ARDUINOJSON_DEFAULT_NESTING_LIMIT 10
 #endif
 
+// Number of bits to store the pointer to next node
+// (saves RAM but limits the number of values in a document)
+#ifndef ARDUINOJSON_SLOT_OFFSET_SIZE
+#if defined(__SIZEOF_POINTER__) && __SIZEOF_POINTER__ == 2
+// Address space == 16-bit => max 127 values
+#define ARDUINOJSON_SLOT_OFFSET_SIZE 1
+#else
+// Address space > 16-bit => max 32767 values
+#define ARDUINOJSON_SLOT_OFFSET_SIZE 2
+#endif
+#endif
+
 #else  // ARDUINOJSON_EMBEDDED_MODE
 
 // On a computer we have plenty of memory so we can use doubles
@@ -114,6 +126,11 @@
 #define ARDUINOJSON_DEFAULT_NESTING_LIMIT 50
 #endif
 
+// Number of bits to store the pointer to next node
+#ifndef ARDUINOJSON_SLOT_OFFSET_SIZE
+#define ARDUINOJSON_SLOT_OFFSET_SIZE 4
+#endif
+
 #endif  // ARDUINOJSON_EMBEDDED_MODE
 
 #ifdef ARDUINO
diff --git a/lib/ArduinoJson/src/ArduinoJson/MsgPack/MsgPackDeserializer.hpp b/lib/ArduinoJson/src/ArduinoJson/MsgPack/MsgPackDeserializer.hpp
index 76228541c..8d9d63d35 100644
--- a/lib/ArduinoJson/src/ArduinoJson/MsgPack/MsgPackDeserializer.hpp
+++ b/lib/ArduinoJson/src/ArduinoJson/MsgPack/MsgPackDeserializer.hpp
@@ -48,7 +48,7 @@ class MsgPackDeserializer {
   template <typename TFilter>
   bool parseVariant(VariantData &variant, TFilter filter,
                     NestingLimit nestingLimit) {
-    uint8_t code = 0; 
+    uint8_t code = 0;
     if (!readByte(code))
       return false;
 
diff --git a/lib/ArduinoJson/src/ArduinoJson/Object/MemberProxy.hpp b/lib/ArduinoJson/src/ArduinoJson/Object/MemberProxy.hpp
index a9ee6034f..1963deaea 100644
--- a/lib/ArduinoJson/src/ArduinoJson/Object/MemberProxy.hpp
+++ b/lib/ArduinoJson/src/ArduinoJson/Object/MemberProxy.hpp
@@ -21,10 +21,13 @@ namespace ARDUINOJSON_NAMESPACE {
 template <typename TObject, typename TStringRef>
 class MemberProxy : public VariantOperators<MemberProxy<TObject, TStringRef> >,
                     public VariantShortcuts<MemberProxy<TObject, TStringRef> >,
-                    public Visitable {
+                    public Visitable,
+                    public VariantTag {
   typedef MemberProxy<TObject, TStringRef> this_type;
 
  public:
+  typedef VariantRef variant_type;
+
   FORCE_INLINE MemberProxy(TObject variant, TStringRef key)
       : _object(variant), _key(key) {}
 
diff --git a/lib/ArduinoJson/src/ArduinoJson/Polyfills/integer.hpp b/lib/ArduinoJson/src/ArduinoJson/Polyfills/integer.hpp
new file mode 100644
index 000000000..8dfebb092
--- /dev/null
+++ b/lib/ArduinoJson/src/ArduinoJson/Polyfills/integer.hpp
@@ -0,0 +1,30 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2020
+// MIT License
+
+#pragma once
+
+#include <stdint.h>  // int8_t, int16_t
+
+#include <ArduinoJson/Namespace.hpp>
+
+namespace ARDUINOJSON_NAMESPACE {
+
+template <int Bits>
+struct int_t;
+
+template <>
+struct int_t<8> {
+  typedef int8_t type;
+};
+
+template <>
+struct int_t<16> {
+  typedef int16_t type;
+};
+
+template <>
+struct int_t<32> {
+  typedef int32_t type;
+};
+}  // namespace ARDUINOJSON_NAMESPACE
diff --git a/lib/ArduinoJson/src/ArduinoJson/Variant/VariantOperators.hpp b/lib/ArduinoJson/src/ArduinoJson/Variant/VariantOperators.hpp
index 79379e814..df4e9df28 100644
--- a/lib/ArduinoJson/src/ArduinoJson/Variant/VariantOperators.hpp
+++ b/lib/ArduinoJson/src/ArduinoJson/Variant/VariantOperators.hpp
@@ -9,6 +9,7 @@
 #include <ArduinoJson/Polyfills/attributes.hpp>
 #include <ArduinoJson/Polyfills/type_traits.hpp>
 #include <ArduinoJson/Variant/VariantAs.hpp>
+#include <ArduinoJson/Variant/VariantTag.hpp>
 
 namespace ARDUINOJSON_NAMESPACE {
 
@@ -17,23 +18,23 @@ CompareResult compare(const T1 &lhs, const T2 &rhs);  // VariantCompare.cpp
 
 template <typename TVariant>
 struct VariantOperators {
-  // Returns the default value if the VariantRef is undefined of incompatible
+  // Returns the default value if the VariantRef is undefined or incompatible
   template <typename T>
-  friend typename enable_if<!IsVisitable<T>::value, T>::type operator|(
-      const TVariant &variant, const T &defaultValue) {
+  friend typename enable_if<!IsVariant<T>::value, T>::type operator|(
+      const TVariant &variant, T defaultValue) {
     if (variant.template is<T>())
       return variant.template as<T>();
     else
       return defaultValue;
   }
-
-  // Returns the default value if the VariantRef is undefined of incompatible
-  // Special case for string: null is treated as undefined
+  // Returns the default value if the VariantRef is undefined or incompatible
   template <typename T>
-  friend typename enable_if<is_same<T, const char *>::value, T>::type operator|(
-      const TVariant &variant, T defaultValue) {
-    const char *value = variant.template as<const char *>();
-    return value ? value : defaultValue;
+  friend typename enable_if<IsVariant<T>::value, typename T::variant_type>::type
+  operator|(const TVariant &variant, T defaultValue) {
+    if (variant)
+      return variant;
+    else
+      return defaultValue;
   }
 
   // value == TVariant
diff --git a/lib/ArduinoJson/src/ArduinoJson/Variant/VariantRef.hpp b/lib/ArduinoJson/src/ArduinoJson/Variant/VariantRef.hpp
index c82ec1eac..a8b9067a6 100644
--- a/lib/ArduinoJson/src/ArduinoJson/Variant/VariantRef.hpp
+++ b/lib/ArduinoJson/src/ArduinoJson/Variant/VariantRef.hpp
@@ -16,6 +16,7 @@
 #include <ArduinoJson/Variant/VariantOperators.hpp>
 #include <ArduinoJson/Variant/VariantRef.hpp>
 #include <ArduinoJson/Variant/VariantShortcuts.hpp>
+#include <ArduinoJson/Variant/VariantTag.hpp>
 
 namespace ARDUINOJSON_NAMESPACE {
 
@@ -23,12 +24,9 @@ namespace ARDUINOJSON_NAMESPACE {
 class ArrayRef;
 class ObjectRef;
 
-template <typename, typename>
-class MemberProxy;
-
 // Contains the methods shared by VariantRef and VariantConstRef
 template <typename TData>
-class VariantRefBase {
+class VariantRefBase : public VariantTag {
  public:
   // Tells wether the variant has the specified type.
   // Returns true if the variant has type type T, false otherwise.
diff --git a/lib/ArduinoJson/src/ArduinoJson/Variant/VariantSlot.hpp b/lib/ArduinoJson/src/ArduinoJson/Variant/VariantSlot.hpp
index af6467097..38494f3b0 100644
--- a/lib/ArduinoJson/src/ArduinoJson/Variant/VariantSlot.hpp
+++ b/lib/ArduinoJson/src/ArduinoJson/Variant/VariantSlot.hpp
@@ -4,15 +4,15 @@
 
 #pragma once
 
-#include <stdint.h>  // int8_t, int16_t
-
+#include <ArduinoJson/Polyfills/integer.hpp>
+#include <ArduinoJson/Polyfills/limits.hpp>
 #include <ArduinoJson/Polyfills/type_traits.hpp>
 #include <ArduinoJson/Strings/StoragePolicy.hpp>
 #include <ArduinoJson/Variant/VariantContent.hpp>
 
 namespace ARDUINOJSON_NAMESPACE {
 
-typedef conditional<sizeof(void*) <= 2, int8_t, int16_t>::type VariantSlotDiff;
+typedef int_t<ARDUINOJSON_SLOT_OFFSET_SIZE * 8>::type VariantSlotDiff;
 
 class VariantSlot {
   // CAUTION: same layout as VariantData
@@ -61,11 +61,19 @@ class VariantSlot {
   }
 
   void setNext(VariantSlot* slot) {
+    ARDUINOJSON_ASSERT(!slot || slot - this >=
+                                    numeric_limits<VariantSlotDiff>::lowest());
+    ARDUINOJSON_ASSERT(!slot || slot - this <=
+                                    numeric_limits<VariantSlotDiff>::highest());
     _next = VariantSlotDiff(slot ? slot - this : 0);
   }
 
   void setNextNotNull(VariantSlot* slot) {
     ARDUINOJSON_ASSERT(slot != 0);
+    ARDUINOJSON_ASSERT(slot - this >=
+                       numeric_limits<VariantSlotDiff>::lowest());
+    ARDUINOJSON_ASSERT(slot - this <=
+                       numeric_limits<VariantSlotDiff>::highest());
     _next = VariantSlotDiff(slot - this);
   }
 
diff --git a/lib/ArduinoJson/src/ArduinoJson/Variant/VariantTag.hpp b/lib/ArduinoJson/src/ArduinoJson/Variant/VariantTag.hpp
new file mode 100644
index 000000000..e9a08aecd
--- /dev/null
+++ b/lib/ArduinoJson/src/ArduinoJson/Variant/VariantTag.hpp
@@ -0,0 +1,16 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2020
+// MIT License
+
+#pragma once
+
+#include <ArduinoJson/Namespace.hpp>
+
+namespace ARDUINOJSON_NAMESPACE {
+
+struct VariantTag {};
+
+template <typename T>
+struct IsVariant : is_base_of<VariantTag, T> {};
+
+}  // namespace ARDUINOJSON_NAMESPACE
diff --git a/lib/ArduinoJson/src/ArduinoJson/version.hpp b/lib/ArduinoJson/src/ArduinoJson/version.hpp
index 46b6bc62e..cd57a4dae 100644
--- a/lib/ArduinoJson/src/ArduinoJson/version.hpp
+++ b/lib/ArduinoJson/src/ArduinoJson/version.hpp
@@ -4,7 +4,7 @@
 
 #pragma once
 
-#define ARDUINOJSON_VERSION "6.17.0"
+#define ARDUINOJSON_VERSION "6.17.1"
 #define ARDUINOJSON_VERSION_MAJOR 6
 #define ARDUINOJSON_VERSION_MINOR 17
-#define ARDUINOJSON_VERSION_REVISION 0
+#define ARDUINOJSON_VERSION_REVISION 1
diff --git a/lib/ArduinoJson/src/CMakeLists.txt b/lib/ArduinoJson/src/CMakeLists.txt
deleted file mode 100644
index de0032ae2..000000000
--- a/lib/ArduinoJson/src/CMakeLists.txt
+++ /dev/null
@@ -1,90 +0,0 @@
-# ArduinoJson - arduinojson.org
-# Copyright Benoit Blanchon 2014-2020
-# MIT License
-
-# I have no idea what this is about, I simply followed the instructions from:
-# https://dominikberner.ch/cmake-interface-lib/
-
-add_library(ArduinoJson INTERFACE)
-
-include(GNUInstallDirs)
-
-# Adding the install interface generator expression makes sure that the include
-# files are installed to the proper location (provided by GNUInstallDirs)
-target_include_directories(ArduinoJson
-    INTERFACE
-        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
-        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
-)
-
-target_compile_definitions(ArduinoJson
-    INTERFACE
-        ARDUINOJSON_DEBUG=$<CONFIG:Debug>
-)
-
-# locations are provided by GNUInstallDirs
-install(
-    TARGETS
-        ArduinoJson
-    EXPORT
-        ArduinoJson_Targets
-    ARCHIVE DESTINATION
-        ${CMAKE_INSTALL_LIBDIR}
-    LIBRARY DESTINATION
-        ${CMAKE_INSTALL_LIBDIR}
-    RUNTIME DESTINATION
-        ${CMAKE_INSTALL_BINDIR}
-)
-
-include(CMakePackageConfigHelpers)
-
-if(${CMAKE_VERSION} VERSION_GREATER "3.14.0") 
-    set(ARCH_INDEPENDENT "ARCH_INDEPENDENT")
-endif()
-
-write_basic_package_version_file(
-        "${PROJECT_BINARY_DIR}/ArduinoJsonConfigVersion.cmake"
-    VERSION
-        ${PROJECT_VERSION}
-    COMPATIBILITY
-        SameMajorVersion
-    ${ARCH_INDEPENDENT}
-)
-
-configure_package_config_file(
-        "${PROJECT_SOURCE_DIR}/extras/ArduinoJsonConfig.cmake.in"
-        "${PROJECT_BINARY_DIR}/ArduinoJsonConfig.cmake"
-    INSTALL_DESTINATION
-        ${CMAKE_INSTALL_DATAROOTDIR}/ArduinoJson/cmake)
-
-install(
-    EXPORT
-        ArduinoJson_Targets
-    FILE
-        ArduinoJsonTargets.cmake
-    DESTINATION
-        ${CMAKE_INSTALL_DATAROOTDIR}/ArduinoJson/cmake
-)
-
-install(
-    FILES
-        "${PROJECT_BINARY_DIR}/ArduinoJsonConfig.cmake"
-        "${PROJECT_BINARY_DIR}/ArduinoJsonConfigVersion.cmake"
-    DESTINATION
-        "${CMAKE_INSTALL_DATAROOTDIR}/ArduinoJson/cmake"
-)
-
-install(
-    FILES
-        ArduinoJson.h
-        ArduinoJson.hpp
-    DESTINATION
-        include
-)
-
-install(
-    DIRECTORY
-        "${CMAKE_CURRENT_SOURCE_DIR}/ArduinoJson"
-    DESTINATION
-        include
-)