diff --git a/userspace/CMakeLists.txt b/userspace/CMakeLists.txt
index 31fdebae..ad24eafe 100644
--- a/userspace/CMakeLists.txt
+++ b/userspace/CMakeLists.txt
@@ -39,6 +39,8 @@ endforeach()
 add_custom_target(userspace)
 add_custom_target(userspace-install DEPENDS userspace)
 
+add_subdirectory(aoc2023)
+
 foreach(USERSPACE_PROJECT ${USERSPACE_PROJECTS})
 	target_compile_options(${USERSPACE_PROJECT} PRIVATE -g)
 	add_dependencies(${USERSPACE_PROJECT} libc-install ban-install)
diff --git a/userspace/aoc2023/CMakeLists.txt b/userspace/aoc2023/CMakeLists.txt
new file mode 100644
index 00000000..da6ee4ff
--- /dev/null
+++ b/userspace/aoc2023/CMakeLists.txt
@@ -0,0 +1,24 @@
+cmake_minimum_required(VERSION 3.26)
+
+project(aoc2023 CXX)
+
+set(AOC2023_PROJECTS
+	day1
+)
+
+foreach(AOC2023_PROJECT ${AOC2023_PROJECTS})
+	add_subdirectory(${AOC2023_PROJECT})
+endforeach()
+
+add_custom_target(aoc2023)
+add_custom_target(aoc2023-install DEPENDS aoc2023)
+
+foreach(AOC2023_PROJECT ${AOC2023_PROJECTS})
+	target_compile_options(${AOC2023_PROJECT} PRIVATE -g)
+	add_dependencies(${AOC2023_PROJECT} libc-install ban-install )
+	add_dependencies(aoc2023 ${AOC2023_PROJECT})
+	add_dependencies(aoc2023-install ${AOC2023_PROJECT}-install)
+endforeach()
+
+add_dependencies(userspace aoc2023)
+add_dependencies(userspace-install aoc2023-install)
diff --git a/userspace/aoc2023/day1/CMakeLists.txt b/userspace/aoc2023/day1/CMakeLists.txt
new file mode 100644
index 00000000..6290e90a
--- /dev/null
+++ b/userspace/aoc2023/day1/CMakeLists.txt
@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.26)
+
+project(day1 CXX)
+
+set(SOURCES
+	main.cpp
+)
+
+add_executable(day1 ${SOURCES})
+target_compile_options(day1 PUBLIC -O2 -g)
+target_link_libraries(day1 PUBLIC libc)
+
+add_custom_target(day1-install
+	COMMAND ${CMAKE_COMMAND} -E make_directory ${BANAN_BIN}/aoc2023
+	COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_BINARY_DIR}/day1 ${BANAN_BIN}/aoc2023/
+	DEPENDS day1
+)
diff --git a/userspace/aoc2023/day1/main.cpp b/userspace/aoc2023/day1/main.cpp
new file mode 100644
index 00000000..a34d3183
--- /dev/null
+++ b/userspace/aoc2023/day1/main.cpp
@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main()
+{
+	printf("hello world\n");
+}