diff --git a/setup.py b/setup.py
index 6dd2914..5f42774 100644
--- a/setup.py
+++ b/setup.py
@@ -24,6 +24,7 @@ def get_version():
 ext = Extension(
     'pysetns.ext',
     sources=['src/ext.c'],
+    py_limited_api=True,
 )
 
 setup(
diff --git a/src/ext.c b/src/ext.c
index dceb4f1..4425d95 100644
--- a/src/ext.c
+++ b/src/ext.c
@@ -1,4 +1,5 @@
 #define _GNU_SOURCE
+#define Py_LIMITED_API 0x03080000f0
 #include <Python.h>
 #include <sched.h>
 #include <linux/sched.h>