diff --git a/.gitmodules b/.gitmodules
index 0078131..03a7fa7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -16,3 +16,6 @@
 [submodule "eink/spi"]
 	path = eink/spi
 	url = git@git.blackmark.me:avr/spi.git
+[submodule "eink/avr-libstdcpp"]
+	path = eink/avr-libstdcpp
+	url = git@github.com:modm-io/avr-libstdcpp.git
diff --git a/eink/Makefile b/eink/Makefile
index dce3670..2a6479f 100644
--- a/eink/Makefile
+++ b/eink/Makefile
@@ -10,7 +10,7 @@ FUSES = -U lfuse:w:0xff:m -U hfuse:w:0xd7:m -U efuse:w:0xfd:m
 
 # Parameters
 PROJECT = $(lastword $(subst /, ,$(CURDIR)))
-INCS =
+INCS = -isystem avr-libstdcpp/include
 LIBS =
 DEFS = -DNDEBUG
 
diff --git a/eink/avr-libstdcpp b/eink/avr-libstdcpp
new file mode 160000
index 0000000..d289637
--- /dev/null
+++ b/eink/avr-libstdcpp
@@ -0,0 +1 @@
+Subproject commit d289637d14cb9928a3690be4f2934aa2920f0f38
diff --git a/eink/eink.cppproj b/eink/eink.cppproj
index 53b2ac8..5c9c6ed 100644
--- a/eink/eink.cppproj
+++ b/eink/eink.cppproj
@@ -140,7 +140,7 @@
   <avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcccpp.compiler.optimization.AllocateBytesNeededForEnum>
   <avrgcccpp.compiler.warnings.AllWarnings>True</avrgcccpp.compiler.warnings.AllWarnings>
   <avrgcccpp.compiler.warnings.Pedantic>True</avrgcccpp.compiler.warnings.Pedantic>
-  <avrgcccpp.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -Wextra -Wno-array-bounds -std=c++20</avrgcccpp.compiler.miscellaneous.OtherFlags>
+  <avrgcccpp.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -Wextra -Wno-array-bounds -std=c++20 -isystem"%24(ProjectDir)/avr-libstdcpp/include"</avrgcccpp.compiler.miscellaneous.OtherFlags>
   <avrgcccpp.linker.libraries.Libraries>
     <ListValues>
       <Value>libm</Value>
@@ -199,7 +199,7 @@
   <avrgcccpp.compiler.optimization.DebugLevel>Maximum (-g3)</avrgcccpp.compiler.optimization.DebugLevel>
   <avrgcccpp.compiler.warnings.AllWarnings>True</avrgcccpp.compiler.warnings.AllWarnings>
   <avrgcccpp.compiler.warnings.Pedantic>True</avrgcccpp.compiler.warnings.Pedantic>
-  <avrgcccpp.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -Wextra -std=c++20</avrgcccpp.compiler.miscellaneous.OtherFlags>
+  <avrgcccpp.compiler.miscellaneous.OtherFlags>-fno-threadsafe-statics -Wextra -std=c++20 -isystem"%24(ProjectDir)/avr-libstdcpp/include"</avrgcccpp.compiler.miscellaneous.OtherFlags>
   <avrgcccpp.linker.libraries.Libraries>
     <ListValues>
       <Value>libm</Value>
diff --git a/eink/main.cpp b/eink/main.cpp
index 759087c..e7e1207 100644
--- a/eink/main.cpp
+++ b/eink/main.cpp
@@ -1,18 +1,19 @@
 #include "clock.hpp"
 
+#include <array>
+
 #include "eink/eink.hpp"
 #include "flash/flash.hpp"
 #include "io/io.hpp"
 #include "spi/spi.hpp"
 #include "uart/uart.hpp"
-#include "util/array.hpp"
 
 using uart_t = uart::Uart0<>;
 REGISTER_UART0_INT_VECTORS(uart_t);
 
 //////////////////////////////////////////////////////////////////////////
 
-constexpr auto IMAGE [[gnu::progmem]] = util::to_array<uint8_t>({
+constexpr auto IMAGE [[gnu::progmem]] = std::to_array<uint8_t>({
     0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x85, 0x79, 0x79, 0x79, 0x79, 0x79,
     0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79,
     0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x79, 0x85, 0x79, 0x79, 0x79,