diff --git a/libc/include/sys/sysinfo.h b/libc/include/sys/sysinfo.h
index cae5c49..5956feb 100644
--- a/libc/include/sys/sysinfo.h
+++ b/libc/include/sys/sysinfo.h
@@ -39,14 +39,14 @@
 __BEGIN_DECLS
 
 /**
- * [sysinfo(2)](http://man7.org/linux/man-pages/man2/sysinfo.2.html) queries system information.
+ * [sysinfo(2)](https://man7.org/linux/man-pages/man2/sysinfo.2.html) queries system information.
  *
  * Returns 0 on success, and returns -1 and sets `errno` on failure.
  */
 int sysinfo(struct sysinfo* _Nonnull __info);
 
 /**
- * [get_nprocs_conf(3)](http://man7.org/linux/man-pages/man3/get_nprocs_conf.3.html) returns
+ * [get_nprocs_conf(3)](https://man7.org/linux/man-pages/man3/get_nprocs_conf.3.html) returns
  * the total number of processors in the system.
  *
  * Available since API level 23.
@@ -56,7 +56,7 @@
 int get_nprocs_conf(void) __INTRODUCED_IN(23);
 
 /**
- * [get_nprocs(3)](http://man7.org/linux/man-pages/man3/get_nprocs.3.html) returns
+ * [get_nprocs(3)](https://man7.org/linux/man-pages/man3/get_nprocs.3.html) returns
  * the number of processors in the system that are currently on-line.
  *
  * Available since API level 23.
@@ -66,7 +66,7 @@
 int get_nprocs(void) __INTRODUCED_IN(23);
 
 /**
- * [get_phys_pages(3)](http://man7.org/linux/man-pages/man3/get_phys_pages.3.html) returns
+ * [get_phys_pages(3)](https://man7.org/linux/man-pages/man3/get_phys_pages.3.html) returns
  * the total number of physical pages in the system.
  *
  * Available since API level 23.
@@ -76,7 +76,7 @@
 long get_phys_pages(void) __INTRODUCED_IN(23);
 
 /**
- * [get_avphys_pages(3)](http://man7.org/linux/man-pages/man3/get_avphys_pages.3.html) returns
+ * [get_avphys_pages(3)](https://man7.org/linux/man-pages/man3/get_avphys_pages.3.html) returns
  * the number of physical pages in the system that are currently available.
  *
  * Available since API level 23.