diff --git a/Makefile b/Makefile
index e61db0e..859c75e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 
 CC := gcc
-CFLAGS := -g -O3 -std=c2x -Wall -Wextra -Wpedantic -Werror
+CFLAGS := -g -O3 -std=c2x -Wall -Wextra -Wpedantic -Werror -Iinclude
 
 BUILD_DIR := build
 BIN_DIR := lib
diff --git a/compile_flags.txt b/compile_flags.txt
index 835222d..6fc1b5a 100644
--- a/compile_flags.txt
+++ b/compile_flags.txt
@@ -2,3 +2,4 @@
 -Wextra
 -Wpedantic
 -std=c2x
+-Iinclude
diff --git a/src/alloc_backend.h b/include/alloc_backend.h
similarity index 100%
rename from src/alloc_backend.h
rename to include/alloc_backend.h
diff --git a/src/arena.h b/include/arena.h
similarity index 100%
rename from src/arena.h
rename to include/arena.h