diff --git a/python/postal/pyexpand.c b/python/postal/pyexpand.c
index 5188e72b..7172f077 100644
--- a/python/postal/pyexpand.c
+++ b/python/postal/pyexpand.c
@@ -1,3 +1,6 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
 #include <Python.h>
 #include <libpostal.h>
 
diff --git a/python/postal/pyparser.c b/python/postal/pyparser.c
index 24ee28ee..5e041a18 100644
--- a/python/postal/pyparser.c
+++ b/python/postal/pyparser.c
@@ -1,3 +1,7 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
 #include <Python.h>
 #include <libpostal.h>