diff --git a/libraries/pico_vector/pico_vector.cmake b/libraries/pico_vector/pico_vector.cmake
index c9056440..73f17c5f 100644
--- a/libraries/pico_vector/pico_vector.cmake
+++ b/libraries/pico_vector/pico_vector.cmake
@@ -9,4 +9,10 @@ add_library(pico_vector
 
 target_include_directories(pico_vector INTERFACE ${CMAKE_CURRENT_LIST_DIR})
 
-target_link_libraries(pico_vector pico_graphics pico_stdlib hardware_interp)
\ No newline at end of file
+target_link_libraries(pico_vector pico_graphics pico_stdlib hardware_interp)
+
+set_source_files_properties(
+    ${CMAKE_CURRENT_LIST_DIR}/pico_vector.cpp
+    PROPERTIES COMPILE_FLAGS
+    "-Wno-narrowing"
+)
\ No newline at end of file
diff --git a/micropython/modules/picovector/micropython.cmake b/micropython/modules/picovector/micropython.cmake
index afb3a393..381d8b50 100644
--- a/micropython/modules/picovector/micropython.cmake
+++ b/micropython/modules/picovector/micropython.cmake
@@ -20,3 +20,9 @@ target_compile_definitions(usermod_picovector INTERFACE
 target_link_libraries(usermod_picovector INTERFACE hardware_interp)
 
 target_link_libraries(usermod INTERFACE usermod_picovector)
+
+set_source_files_properties(
+    ${CMAKE_CURRENT_LIST_DIR}/../../../libraries/pico_vector/pico_vector.cpp
+    PROPERTIES COMPILE_FLAGS
+    "-Wno-narrowing"
+)