diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e727b2b0..4ab303d2 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -357,6 +357,14 @@ set(LVGL_SRC
         libs/lvgl/src/lv_widgets/lv_win.c
         )
 
+set(QCBOR_SRC
+        libs/QCBOR/src/ieee754.c
+        libs/QCBOR/src/qcbor_decode.c
+        libs/QCBOR/src/qcbor_encode.c
+        libs/QCBOR/src/qcbor_err_to_str.c
+        libs/QCBOR/src/UsefulBuf.c
+        )
+
 list(APPEND IMAGE_FILES
         displayapp/icons/battery/os_battery_error.c
         displayapp/icons/battery/os_battery_100.c
@@ -835,6 +843,24 @@ target_compile_options(lvgl PRIVATE
         $<$<COMPILE_LANGUAGE:ASM>: -MP -MD -x assembler-with-cpp>
         )
 
+# QCBOR
+add_library(QCBOR STATIC ${QCBOR_SRC})
+target_include_directories(QCBOR SYSTEM PUBLIC libs/QCBOR/inc)
+# This is required with the current configuration
+target_compile_definitions(QCBOR PUBLIC QCBOR_DISABLE_FLOAT_HW_USE)
+# These are for space-saving
+target_compile_definitions(QCBOR PUBLIC QCBOR_DISABLE_PREFERRED_FLOAT)
+target_compile_definitions(QCBOR PUBLIC QCBOR_DISABLE_EXP_AND_MANTISSA)
+target_compile_definitions(QCBOR PUBLIC QCBOR_DISABLE_INDEFINITE_LENGTH_STRINGS)
+target_compile_definitions(QCBOR PUBLIC QCBOR_DISABLE_INDEFINITE_LENGTH_ARRAYS)
+target_compile_definitions(QCBOR PUBLIC QCBOR_DISABLE_UNCOMMON_TAGS)
+set_target_properties(QCBOR PROPERTIES LINKER_LANGUAGE C)
+target_compile_options(QCBOR PRIVATE
+        $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:DEBUG>>: ${COMMON_FLAGS} -O0 -g3>
+        $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:RELEASE>>: ${COMMON_FLAGS} -O3>
+        $<$<COMPILE_LANGUAGE:ASM>: -MP -MD -x assembler-with-cpp>
+        )
+
 # LITTLEFS_SRC
 add_library(littlefs STATIC ${LITTLEFS_SRC})
 target_include_directories(littlefs SYSTEM PUBLIC . ../)
@@ -853,7 +879,7 @@ set(EXECUTABLE_FILE_NAME ${EXECUTABLE_NAME}-${pinetime_VERSION_MAJOR}.${pinetime
 set(NRF5_LINKER_SCRIPT "${CMAKE_SOURCE_DIR}/gcc_nrf52.ld")
 add_executable(${EXECUTABLE_NAME} ${SOURCE_FILES})
 set_target_properties(${EXECUTABLE_NAME} PROPERTIES OUTPUT_NAME ${EXECUTABLE_FILE_NAME})
-target_link_libraries(${EXECUTABLE_NAME} nimble nrf-sdk lvgl littlefs)
+target_link_libraries(${EXECUTABLE_NAME} nimble nrf-sdk lvgl littlefs QCBOR)
 target_compile_options(${EXECUTABLE_NAME} PUBLIC
         $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:DEBUG>>: ${COMMON_FLAGS} -Og -g3>
         $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:RELEASE>>: ${COMMON_FLAGS} -Os>
@@ -882,7 +908,7 @@ set(IMAGE_MCUBOOT_FILE_NAME ${EXECUTABLE_MCUBOOT_NAME}-image-${pinetime_VERSION_
 set(DFU_MCUBOOT_FILE_NAME ${EXECUTABLE_MCUBOOT_NAME}-dfu-${pinetime_VERSION_MAJOR}.${pinetime_VERSION_MINOR}.${pinetime_VERSION_PATCH}.zip)
 set(NRF5_LINKER_SCRIPT_MCUBOOT "${CMAKE_SOURCE_DIR}/gcc_nrf52-mcuboot.ld")
 add_executable(${EXECUTABLE_MCUBOOT_NAME} ${SOURCE_FILES})
-target_link_libraries(${EXECUTABLE_MCUBOOT_NAME} nimble nrf-sdk lvgl littlefs)
+target_link_libraries(${EXECUTABLE_MCUBOOT_NAME} nimble nrf-sdk lvgl littlefs QCBOR)
 set_target_properties(${EXECUTABLE_MCUBOOT_NAME} PROPERTIES OUTPUT_NAME ${EXECUTABLE_MCUBOOT_FILE_NAME})
 target_compile_options(${EXECUTABLE_MCUBOOT_NAME} PUBLIC
         $<$<AND:$<COMPILE_LANGUAGE:C>,$<CONFIG:DEBUG>>: ${COMMON_FLAGS} -Og -g3>
diff --git a/src/libs/QCBOR b/src/libs/QCBOR
new file mode 160000
index 00000000..9e2f7080
--- /dev/null
+++ b/src/libs/QCBOR
@@ -0,0 +1 @@
+Subproject commit 9e2f70804393823cc6d16f9f1035ef7223faca04