diff --git a/UI/CMakeLists.txt b/UI/CMakeLists.txt
index 1206f2bef..ae881a3f6 100644
--- a/UI/CMakeLists.txt
+++ b/UI/CMakeLists.txt
@@ -81,7 +81,6 @@ include_directories(${LIBCURL_INCLUDE_DIRS})
 add_definitions(${LIBCURL_DEFINITIONS})
 
 if(WIN32)
-	include_directories(${OBS_JANSSON_INCLUDE_DIRS})
 	include_directories(${BLAKE2_INCLUDE_DIR})
 
 	set(obs_PLATFORM_SOURCES
@@ -96,8 +95,7 @@ if(WIN32)
 		win-update/win-update-helpers.hpp)
 	set(obs_PLATFORM_LIBRARIES
 		crypt32
-		blake2
-		${OBS_JANSSON_IMPORT})
+		blake2)
 
 	if(CMAKE_SIZEOF_VOID_P EQUAL 4)
 		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /LARGEADDRESSAWARE")
diff --git a/UI/win-update/updater/CMakeLists.txt b/UI/win-update/updater/CMakeLists.txt
index 83309c362..dcf43f6b7 100644
--- a/UI/win-update/updater/CMakeLists.txt
+++ b/UI/win-update/updater/CMakeLists.txt
@@ -9,17 +9,19 @@ endif()
 
 project(updater)
 
-include_directories(${OBS_JANSSON_INCLUDE_DIRS})
 include_directories(${LIBLZMA_INCLUDE_DIRS})
+include_directories(SYSTEM "${CMAKE_SOURCE_DIR}/deps/json11")
 include_directories(SYSTEM "${CMAKE_SOURCE_DIR}/libobs")
 include_directories(${BLAKE2_INCLUDE_DIR})
 
 set(updater_HEADERS
+	${CMAKE_SOURCE_DIR}/deps/json11/json11.hpp
 	../win-update-helpers.hpp
 	resource.h
 	updater.hpp
 	)
 set(updater_SOURCES
+	${CMAKE_SOURCE_DIR}/deps/json11/json11.cpp
 	../win-update-helpers.cpp
 	init-hook-files.c
 	updater.cpp
@@ -40,7 +42,6 @@ add_executable(updater WIN32
 	${updater_SOURCES}
 	)
 target_link_libraries(updater
-	${OBS_JANSSON_IMPORT}
 	${STATIC_ZLIB_PATH}
 	lzma
 	blake2
diff --git a/UI/win-update/updater/updater.cpp b/UI/win-update/updater/updater.cpp
index 6a2d6f322..7fe7db809 100644
--- a/UI/win-update/updater/updater.cpp
+++ b/UI/win-update/updater/updater.cpp
@@ -26,6 +26,7 @@
 #include <mutex>
 
 using namespace std;
+using namespace json11;
 
 /* ----------------------------------------------------------------------- */
 
@@ -603,68 +604,63 @@ static inline bool is_64bit_file(const char *file)
 	       strstr(file, "64.exe") != nullptr;
 }
 
-static inline bool has_str(const char *file, const char *str)
-{
-	return (file && str) ? (strstr(file, str) != nullptr) : false;
-}
-
 #define UTF8ToWideBuf(wide, utf8) UTF8ToWide(wide, _countof(wide), utf8)
 #define WideToUTF8Buf(utf8, wide) WideToUTF8(utf8, _countof(utf8), wide)
 
 #define UPDATE_URL L"https://cdn-fastly.obsproject.com/update_studio"
 
-static bool AddPackageUpdateFiles(json_t *root, size_t idx,
+static bool AddPackageUpdateFiles(const Json &root, size_t idx,
 				  const wchar_t *tempPath)
 {
-	json_t *package = json_array_get(root, idx);
-	json_t *name = json_object_get(package, "name");
-	json_t *files = json_object_get(package, "files");
+	const Json &package = root[idx];
+	const Json &name = package["name"];
+	const Json &files = package["files"];
 
 	bool isWin64 = is_64bit_windows();
 
-	if (!json_is_array(files))
+	if (!files.is_array())
 		return true;
-	if (!json_is_string(name))
+	if (!name.is_string())
 		return true;
 
 	wchar_t wPackageName[512];
-	const char *packageName = json_string_value(name);
-	size_t fileCount = json_array_size(files);
+	const string &packageName = name.string_value();
+	size_t fileCount = files.array_items().size();
 
-	if (!UTF8ToWideBuf(wPackageName, packageName))
+	if (!UTF8ToWideBuf(wPackageName, packageName.c_str()))
 		return false;
 
-	if (strcmp(packageName, "core") != 0 &&
-	    !NonCorePackageInstalled(packageName))
+	if (packageName != "core" &&
+	    !NonCorePackageInstalled(packageName.c_str()))
 		return true;
 
 	for (size_t j = 0; j < fileCount; j++) {
-		json_t *file = json_array_get(files, j);
-		json_t *fileName = json_object_get(file, "name");
-		json_t *hash = json_object_get(file, "hash");
-		json_t *size = json_object_get(file, "size");
+		const Json &file = files[j];
+		const Json &fileName = file["name"];
+		const Json &hash = file["hash"];
+		const Json &size = file["size"];
 
-		if (!json_is_string(fileName))
+		if (!fileName.is_string())
 			continue;
-		if (!json_is_string(hash))
+		if (!hash.is_string())
 			continue;
-		if (!json_is_integer(size))
+		if (!size.is_number())
 			continue;
 
-		const char *fileUTF8 = json_string_value(fileName);
-		const char *hashUTF8 = json_string_value(hash);
-		int fileSize = (int)json_integer_value(size);
+		const string &fileUTF8 = fileName.string_value();
+		const string &hashUTF8 = hash.string_value();
+		int fileSize = size.int_value();
 
-		if (strlen(hashUTF8) != BLAKE2_HASH_LENGTH * 2)
+		if (hashUTF8.size() != BLAKE2_HASH_LENGTH * 2)
 			continue;
 
-		if (!isWin64 && is_64bit_file(fileUTF8))
+		if (!isWin64 && is_64bit_file(fileUTF8.c_str()))
 			continue;
 
 		/* ignore update files of opposite arch to reduce download */
 
-		if ((is32bit && has_str(fileUTF8, "/64bit/")) ||
-		    (!is32bit && has_str(fileUTF8, "/32bit/")))
+		if ((is32bit && fileUTF8.find("/64bit/") != string::npos) ||
+		    (!is32bit && fileUTF8.find("/32bit/") != string::npos))
 			continue;
 
 		/* convert strings to wide */
@@ -674,9 +670,9 @@ static bool AddPackageUpdateFiles(json_t *root, size_t idx,
 		wchar_t updateHashStr[BLAKE2_HASH_STR_LENGTH];
 		wchar_t tempFilePath[MAX_PATH];
 
-		if (!UTF8ToWideBuf(updateFileName, fileUTF8))
+		if (!UTF8ToWideBuf(updateFileName, fileUTF8.c_str()))
 			continue;
-		if (!UTF8ToWideBuf(updateHashStr, hashUTF8))
+		if (!UTF8ToWideBuf(updateHashStr, hashUTF8.c_str()))
 			continue;
 
 		/* make sure paths are safe */
@@ -928,7 +924,7 @@ static wchar_t tempPath[MAX_PATH] = {};
 	L"https://obsproject.com/update_studio/getpatchmanifest"
 #define HASH_NULL L"0000000000000000000000000000000000000000"
 
-static bool UpdateVS2019Redists(json_t *root)
+static bool UpdateVS2019Redists(const Json &root)
 {
 	/* ------------------------------------------ *
 	 * Initialize session                         */
@@ -992,18 +988,18 @@ static bool UpdateVS2019Redists(json_t *root)
 	/* ------------------------------------------ *
 	 * Get expected hash                          */
 
-	json_t *redistJson = json_object_get(
-		root, is32bit ? "vc2019_redist_x86" : "vc2019_redist_x64");
-	if (!redistJson) {
+	const char *which = is32bit ? "vc2019_redist_x86" : "vc2019_redist_x64";
+	const Json &redistJson = root[which];
+	if (!redistJson.is_string()) {
 		Status(L"Update failed: Could not parse VC2019 redist json");
 		return false;
 	}
 
-	const char *expectedHashUTF8 = json_string_value(redistJson);
+	const string &expectedHashUTF8 = redistJson.string_value();
 	wchar_t expectedHashWide[BLAKE2_HASH_STR_LENGTH];
 	BYTE expectedHash[BLAKE2_HASH_LENGTH];
 
-	if (!UTF8ToWideBuf(expectedHashWide, expectedHashUTF8)) {
+	if (!UTF8ToWideBuf(expectedHashWide, expectedHashUTF8.c_str())) {
 		DeleteFile(destPath.c_str());
 		Status(L"Update failed: Couldn't convert Json for redist hash");
 		return false;
@@ -1218,18 +1214,18 @@ static bool Update(wchar_t *cmdLine)
 			return false;
 		}
 
-		json_error_t error;
-		root = json_loads(manifestFile.c_str(), 0, &error);
+		string error;
+		root = Json::parse(manifestFile, error);
 
-		if (!root) {
+		if (!error.empty()) {
 			Status(L"Update failed: Couldn't parse update "
 			       L"manifest: %S",
-			       error.text);
+			       error.c_str());
 			return false;
 		}
 	}
 
-	if (!json_is_object(root.get())) {
+	if (!root.is_object()) {
 		Status(L"Update failed: Invalid update manifest");
 		return false;
 	}
@@ -1237,10 +1233,8 @@ static bool Update(wchar_t *cmdLine)
 	/* ------------------------------------- *
 	 * Parse current manifest update files   */
 
-	json_t *packages = json_object_get(root, "packages");
-	size_t packageCount = json_array_size(packages);
-
-	for (size_t i = 0; i < packageCount; i++) {
+	const Json::array &packages = root["packages"].array_items();
+	for (size_t i = 0; i < packages.size(); i++) {
 		if (!AddPackageUpdateFiles(packages, i, tempPath)) {
 			Status(L"Update failed: Failed to process update packages");
 			return false;
@@ -1271,7 +1265,7 @@ static bool Update(wchar_t *cmdLine)
 	/* ------------------------------------- *
 	 * Generate file hash json               */
 
-	Json files(json_array());
+	Json::array files;
 
 	for (update_t &update : updates) {
 		wchar_t whash_string[BLAKE2_HASH_STR_LENGTH];
@@ -1296,10 +1290,10 @@ static bool Update(wchar_t *cmdLine)
 		package_path += "/";
 		package_path += outputPath;
 
-		json_t *obj = json_object();
-		json_object_set(obj, "name", json_string(package_path.c_str()));
-		json_object_set(obj, "hash", json_string(hash_string));
-		json_array_append_new(files, obj);
+		files.emplace_back(Json::object{
+			{"name", package_path},
+			{"hash", hash_string},
+		});
 	}
 
 	/* ------------------------------------- *
@@ -1307,18 +1301,20 @@ static bool Update(wchar_t *cmdLine)
 
 	string newManifest;
 
-	if (json_array_size(files) > 0) {
-		char *post_body = json_dumps(files, JSON_COMPACT);
+	if (files.size() > 0) {
+		string post_body;
+		Json(files).dump(post_body);
 
 		int responseCode;
 
-		int len = (int)strlen(post_body);
+		int len = (int)post_body.size();
 		uLong compressSize = compressBound(len);
 		string compressedJson;
 
 		compressedJson.resize(compressSize);
 		compress2((Bytef *)&compressedJson[0], &compressSize,
-			  (const Bytef *)post_body, len, Z_BEST_COMPRESSION);
+			  (const Bytef *)post_body.c_str(), len,
+			  Z_BEST_COMPRESSION);
 		compressedJson.resize(compressSize);
 
 		bool success = !!HTTPPostData(PATCH_MANIFEST_URL,
@@ -1326,7 +1322,6 @@ static bool Update(wchar_t *cmdLine)
 					      (int)compressedJson.size(),
 					      L"Accept-Encoding: gzip",
 					      &responseCode, newManifest);
-		free(post_body);
 
 		if (!success)
 			return false;
@@ -1344,49 +1339,50 @@ static bool Update(wchar_t *cmdLine)
 	/* ------------------------------------- *
 	 * Parse new manifest                    */
 
-	json_error_t error;
-	root = json_loads(newManifest.c_str(), 0, &error);
-	if (!root) {
+	string error;
+	root = Json::parse(newManifest, error);
+	if (!error.empty()) {
 		Status(L"Update failed: Couldn't parse patch manifest: %S",
-		       error.text);
+		       error.c_str());
 		return false;
 	}
 
-	if (!json_is_array(root.get())) {
+	if (!root.is_array()) {
 		Status(L"Update failed: Invalid patch manifest");
 		return false;
 	}
 
-	packageCount = json_array_size(root);
+	size_t packageCount = root.array_items().size();
 
 	for (size_t i = 0; i < packageCount; i++) {
-		json_t *patch = json_array_get(root, i);
+		const Json &patch = root[i];
 
-		if (!json_is_object(patch)) {
+		if (!patch.is_object()) {
 			Status(L"Update failed: Invalid patch manifest");
 			return false;
 		}
 
-		json_t *name_json = json_object_get(patch, "name");
-		json_t *hash_json = json_object_get(patch, "hash");
-		json_t *source_json = json_object_get(patch, "source");
-		json_t *size_json = json_object_get(patch, "size");
+		const Json &name_json = patch["name"];
+		const Json &hash_json = patch["hash"];
+		const Json &source_json = patch["source"];
+		const Json &size_json = patch["size"];
 
-		if (!json_is_string(name_json))
+		if (!name_json.is_string())
 			continue;
-		if (!json_is_string(hash_json))
+		if (!hash_json.is_string())
 			continue;
-		if (!json_is_string(source_json))
+		if (!source_json.is_string())
 			continue;
-		if (!json_is_integer(size_json))
+		if (!size_json.is_number())
 			continue;
 
-		const char *name = json_string_value(name_json);
-		const char *hash = json_string_value(hash_json);
-		const char *source = json_string_value(source_json);
-		int size = (int)json_integer_value(size_json);
+		const string &name = name_json.string_value();
+		const string &hash = hash_json.string_value();
+		const string &source = source_json.string_value();
+		int size = size_json.int_value();
 
-		UpdateWithPatchIfAvailable(name, hash, source, size);
+		UpdateWithPatchIfAvailable(name.c_str(), hash.c_str(),
+					   source.c_str(), size);
 	}
 
 	/* ------------------------------------- *
diff --git a/UI/win-update/updater/updater.hpp b/UI/win-update/updater/updater.hpp
index 1297ce6d3..812d1da7a 100644
--- a/UI/win-update/updater/updater.hpp
+++ b/UI/win-update/updater/updater.hpp
@@ -74,7 +74,7 @@
 #endif
 
 #include <util/windows/WinHandle.hpp>
-#include <jansson.h>
+#include <json11.hpp>
 #include "resource.h"
 
 bool HTTPGetFile(HINTERNET hConnect, const wchar_t *url,
diff --git a/UI/win-update/win-update-helpers.hpp b/UI/win-update/win-update-helpers.hpp
index ef6aa5900..3f7040c87 100644
--- a/UI/win-update/win-update-helpers.hpp
+++ b/UI/win-update/win-update-helpers.hpp
@@ -4,8 +4,6 @@
 #include <windows.h>
 #include <Wincrypt.h>
 
-#include <jansson.h>
-
 #include <cstdint>
 #include <string>
 
@@ -69,72 +67,5 @@ public:
 
 /* ------------------------------------------------------------------------ */
 
-class Json {
-	json_t *json;
-
-public:
-	inline Json() : json(nullptr) {}
-	explicit inline Json(json_t *json_) : json(json_) {}
-	inline Json(const Json &from) : json(json_incref(from.json)) {}
-	inline Json(Json &&from) : json(from.json) { from.json = nullptr; }
-
-	inline ~Json()
-	{
-		if (json)
-			json_decref(json);
-	}
-
-	inline Json &operator=(json_t *json_)
-	{
-		if (json)
-			json_decref(json);
-		json = json_;
-		return *this;
-	}
-	inline Json &operator=(const Json &from)
-	{
-		if (json)
-			json_decref(json);
-		json = json_incref(from.json);
-		return *this;
-	}
-	inline Json &operator=(Json &&from)
-	{
-		if (json)
-			json_decref(json);
-		json = from.json;
-		from.json = nullptr;
-		return *this;
-	}
-
-	inline operator json_t *() const { return json; }
-
-	inline bool operator!() const { return !json; }
-
-	inline const char *GetString(const char *name,
-				     const char *def = nullptr) const
-	{
-		json_t *obj(json_object_get(json, name));
-		if (!obj)
-			return def;
-		return json_string_value(obj);
-	}
-	inline int64_t GetInt(const char *name, int def = 0) const
-	{
-		json_t *obj(json_object_get(json, name));
-		if (!obj)
-			return def;
-		return json_integer_value(obj);
-	}
-	inline json_t *GetObject(const char *name) const
-	{
-		return json_object_get(json, name);
-	}
-
-	inline json_t *get() const { return json; }
-};
-
-/* ------------------------------------------------------------------------ */
-
 std::string vstrprintf(const char *format, va_list args);
 std::string strprintf(const char *format, ...);
diff --git a/UI/win-update/win-update.cpp b/UI/win-update/win-update.cpp
index 9371a8c7e..2722ee75c 100644
--- a/UI/win-update/win-update.cpp
+++ b/UI/win-update/win-update.cpp
@@ -12,7 +12,7 @@
 
 #include <util/windows/WinHandle.hpp>
 #include <util/util.hpp>
-#include <jansson.h>
+#include <json11.hpp>
 #include <blake2.h>
 
 #include <time.h>
@@ -25,6 +25,7 @@
 #endif
 
 using namespace std;
+using namespace json11;
 
 struct QCef;
 extern QCef *cef;
@@ -402,31 +403,31 @@ static bool ParseUpdateManifest(const char *manifest, bool *updatesAvailable,
 				string &notes_str, int &updateVer)
 try {
 
-	json_error_t error;
-	Json root(json_loads(manifest, 0, &error));
-	if (!root)
-		throw strprintf("Failed reading json string (%d): %s",
-				error.line, error.text);
+	string error;
+	Json root = Json::parse(manifest, error);
+	if (!error.empty())
+		throw strprintf("Failed reading json string: %s",
+				error.c_str());
 
-	if (!json_is_object(root.get()))
+	if (!root.is_object())
 		throw string("Root of manifest is not an object");
 
-	int major = root.GetInt("version_major");
-	int minor = root.GetInt("version_minor");
-	int patch = root.GetInt("version_patch");
+	int major = root["version_major"].int_value();
+	int minor = root["version_minor"].int_value();
+	int patch = root["version_patch"].int_value();
 
 	if (major == 0)
 		throw strprintf("Invalid version number: %d.%d.%d", major,
 				minor, patch);
 
-	json_t *notes = json_object_get(root, "notes");
-	if (!json_is_string(notes))
+	const Json &notes = root["notes"];
+	if (!notes.is_string())
 		throw string("'notes' value invalid");
 
-	notes_str = json_string_value(notes);
+	notes_str = notes.string_value();
 
-	json_t *packages = json_object_get(root, "packages");
-	if (!json_is_array(packages))
+	const Json &packages = root["packages"];
+	if (!packages.is_array())
 		throw string("'packages' value invalid");
 
 	int cur_ver = LIBOBS_API_VER;