diff --git a/src/false.c b/src/false.c
index 3b6ec2a..1617b03 100644
--- a/src/false.c
+++ b/src/false.c
@@ -1,9 +1,18 @@
 /*
- * Copyright (c) 2023 Emma Tebibyte <emma@tebibyte.media>
+ * Copyright (c) 2023–2024 Emma Tebibyte <emma@tebibyte.media>
  * SPDX-License-Identifier: CC0
  *
  * This work is marked with CC0 1.0. To view a copy of this license, visit
  * <http://creativecommons.org/publicdomain/zero/1.0>.
  */
 
-int main() { return 1; }
+#ifdef __OpenBSD__
+#	include <unistd.h> /* pledge(2) */
+#endif
+
+int main() {
+#ifdef __OpenBSD__
+	pledge(NULL, NULL);
+#endif
+return 1;
+}
diff --git a/src/true.c b/src/true.c
index ab8da96..eb16efd 100644
--- a/src/true.c
+++ b/src/true.c
@@ -1,9 +1,17 @@
 /*
- * Copyright (c) 2023 Emma Tebibyte <emma@tebibyte.media>
+ * Copyright (c) 2023–2024 Emma Tebibyte <emma@tebibyte.media>
  * SPDX-License-Identifier: CC0
  *
  * This work is marked with CC0 1.0. To view a copy of this license, visit
  * <http://creativecommons.org/publicdomain/zero/1.0>.
  */
 
-int main() {}
+#ifdef __OpenBSD__
+#	include <unistd.h> /* pledge(2) */
+#endif
+
+int main() {
+#ifdef __OpenBSD__
+	pledge(NULL, NULL);
+#endif
+}