diff --git a/eink.hpp b/eink.hpp
index c6c1a5d..ce5f3e3 100644
--- a/eink.hpp
+++ b/eink.hpp
@@ -1,6 +1,8 @@
 #pragma once
 
-#include <stdint.h>
+#include <utility>
+
+#include <cstdint>
 
 #include <avr/pgmspace.h>
 
@@ -10,11 +12,11 @@
 
 namespace eink {
 
-template <uint16_t Width, uint16_t Height, typename Spi, io::P RstPin, io::P DcPin, io::P BusyPin>
+template <std::uint16_t Width, std::uint16_t Height, typename Spi, io::P RstPin, io::P DcPin, io::P BusyPin>
 class Eink {
 	using word_t = typename Spi::word_t;
 
-	enum class Cmd : uint8_t {
+	enum class Cmd : std::uint8_t {
 		DRIVER_OUTPUT_CONTROL = 0x01,
 		DEEP_SLEEP_MODE = 0x10,
 		DATA_ENTRY_MODE = 0x11,
@@ -40,7 +42,7 @@ class Eink {
 
 	static constexpr auto BLOCK_SIZE = 5;
 
-	enum class Color : uint8_t {
+	enum class Color : std::uint8_t {
 		BLACK = 0b00,
 		WHITE = 0b01,
 		RED = 0b10,
@@ -49,12 +51,12 @@ class Eink {
 
 	class ImageBlock {
 	  public:
-		inline Color &operator[](const size_t idx)
+		inline Color &operator[](const std::size_t idx)
 		{
 			return data[idx];
 		}
 
-		inline const Color &operator[](const size_t idx) const
+		inline const Color &operator[](const std::size_t idx) const
 		{
 			return data[idx];
 		}
@@ -147,26 +149,26 @@ class Eink {
 	template <typename Image>
 	static void draw(const Image &image)
 	{
-		constexpr auto lookup = [](uint8_t bits) {
+		constexpr auto lookup = [](std::uint8_t bits) {
 			auto block = ImageBlock{};
-			for_constexpr(
+			util::for_constexpr(
 			    [&](const auto idx) {
 				    block[idx.value] = static_cast<Color>(bits % 3);
 				    bits /= 3;
 			    },
-			    util::make_index_sequence<BLOCK_SIZE>{});
+			    std::make_index_sequence<BLOCK_SIZE>{});
 			return block;
 		};
 
 		constexpr auto sendImageChannel = [lookup](const auto command, const auto image) {
 			sendCommand(command);
-			auto buffer = uint8_t{0};
-			auto bufferPos = uint8_t{0};
-			for (auto i = uint16_t{0}; i < Width * Height / BLOCK_SIZE; i++) {
+			auto buffer = std::uint8_t{0};
+			auto bufferPos = std::uint8_t{0};
+			for (auto i = std::uint16_t{0}; i < Width * Height / BLOCK_SIZE; i++) {
 				const auto block = lookup(pgm_read_byte(&image[i]));
-				for (auto p = uint8_t{0}; p < BLOCK_SIZE; ++p) {
-					const auto pixel = uint8_t{(command == Cmd::WRITE_RAM_BLACK) ? (block[p] != Color::BLACK)
-					                                                             : (block[p] == Color::RED)};
+				for (auto p = std::uint8_t{0}; p < BLOCK_SIZE; ++p) {
+					const auto pixel = std::uint8_t{(command == Cmd::WRITE_RAM_BLACK) ? (block[p] != Color::BLACK)
+					                                                                  : (block[p] == Color::RED)};
 					buffer |= pixel << (7 - bufferPos++);
 					if (bufferPos == 8) {
 						sendData(buffer);
@@ -189,11 +191,11 @@ class Eink {
 	static void clear()
 	{
 		sendCommand(Cmd::WRITE_RAM_BLACK);
-		for (auto i = uint16_t{0}; i < Width * Height / 8; i++) {
+		for (auto i = std::uint16_t{0}; i < Width * Height / 8; i++) {
 			sendData(0xff);
 		}
 		sendCommand(Cmd::WRITE_RAM_RED);
-		for (auto i = uint16_t{0}; i < Width * Height / 8; i++) {
+		for (auto i = std::uint16_t{0}; i < Width * Height / 8; i++) {
 			sendData(0x00);
 		}