diff --git a/src/mpack/mpack_core.h b/src/mpack/mpack_core.h
index 1d601bc82d..336b778931 100644
--- a/src/mpack/mpack_core.h
+++ b/src/mpack/mpack_core.h
@@ -8,6 +8,7 @@
 #include <assert.h>
 #include <limits.h>
 #include <stddef.h>
+#include <stdbool.h>
 
 #ifdef __GNUC__
 # define FPURE __attribute__((const))