diff --git a/include/nanocbor/nanocbor.h b/include/nanocbor/nanocbor.h
index 6ccf7d1..218f920 100644
--- a/include/nanocbor/nanocbor.h
+++ b/include/nanocbor/nanocbor.h
@@ -30,8 +30,8 @@
 #ifndef NANOCBOR_NANOCBOR_H
 #define NANOCBOR_NANOCBOR_H
 
+#include <inttypes.h>
 #include <stdbool.h>
-#include <stdint.h>
 #include <stdlib.h>
 
 #ifdef __cplusplus
diff --git a/src/decoder.c b/src/decoder.c
index de06302..18f23e4 100644
--- a/src/decoder.c
+++ b/src/decoder.c
@@ -12,6 +12,7 @@
  * @}
  */
 
+#include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <stdlib.h>
diff --git a/tests/automated/test_decoder.c b/tests/automated/test_decoder.c
index 3f156c1..a441319 100644
--- a/tests/automated/test_decoder.c
+++ b/tests/automated/test_decoder.c
@@ -5,6 +5,8 @@
 #include "nanocbor/nanocbor.h"
 #include "test.h"
 #include <CUnit/CUnit.h>
+#include <stdbool.h>
+#include <stdlib.h>
 
 /* NOLINTBEGIN(cppcoreguidelines-avoid-magic-numbers) */
 
diff --git a/tests/encode/main.c b/tests/encode/main.c
index 25a3747..74782d3 100644
--- a/tests/encode/main.c
+++ b/tests/encode/main.c
@@ -2,11 +2,11 @@
  * SPDX-License-Identifier: CC0-1.0
  */
 
+#include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
-#include <unistd.h>
 
 #include "nanocbor/nanocbor.h"