diff --git a/docs/INSTALL.md b/docs/INSTALL.md
index bfcbd2e786..3b403cf804 100644
--- a/docs/INSTALL.md
+++ b/docs/INSTALL.md
@@ -572,20 +572,22 @@ This is a probably incomplete list of known CPU architectures and operating
 systems that curl has been compiled for. If you know a system curl compiles
 and runs on, that is not listed, please let us know.
 
-## 101 Operating Systems
+## 104 Operating Systems
 
-    AIX, AmigaOS, Android, ArcoOS, Aros, Atari FreeMiNT, BeOS, Blackberry 10,
-    Blackberry Tablet OS, Cell OS, CheriBSD, Chrome OS, Cisco IOS, DG/UX,
-    Dragonfly BSD, DR DOS, eCOS, FreeBSD, FreeDOS, FreeRTOS, Fuchsia, Garmin OS,
-    Genode, Haiku, HardenedBSD, HP-UX, Hurd, illumos, Integrity, iOS, ipadOS, IRIX,
-    Linux, Lua RTOS, Mac OS 9, macOS, Mbed, Meego, Micrium, MINIX, Moblin, MorphOS,
-    MPE/iX, MS-DOS, NCR MP-RAS, NetBSD, Netware, NextStep, Nintendo Switch,
-    NonStop OS, NuttX, OpenBSD, OpenStep, Orbis OS, OS/2, OS/400, OS21, Plan 9,
-    PlayStation Portable, QNX, Qubes OS, ReactOS, Redox, RISC OS, ROS, RTEMS,
-    Sailfish OS, SCO Unix, Serenity, SINIX-Z, SkyOS, Solaris, Sortix, SunOS,
-    Syllable OS, Symbian, Tizen, TPF, Tru64, tvOS, ucLinux, Ultrix, UNICOS,
-    UnixWare, VMS, vxWorks, watchOS, Wear OS, WebOS, Wii system software, Wii U,
-    Windows, Windows CE, Xbox System, Xenix, Zephyr, z/OS, z/TPF, z/VM, z/VSE
+    AIX, AmigaOS, Android, ArcoOS, Aros, Atari FreeMiNT, BeOS, Blackberry
+    10, Blackberry Tablet OS, Cell OS, CheriBSD, Chrome OS, Cisco IOS,
+    DG/UX, DR DOS, Dragonfly BSD, eCOS, FreeBSD, FreeDOS, FreeRTOS, Fuchsia,
+    Garmin OS, Genode, Haiku, HardenedBSD, HP-UX, Hurd, IBM I, illumos,
+    Integrity, iOS, ipadOS, IRIX, Linux, Lua RTOS, Mac OS 9, macOS, Maemo,
+    Mbed, Meego, Micrium, MINIX, Minoca, Moblin, MorphOS, MPE/iX, MS-DOS,
+    NCR MP-RAS, NetBSD, Netware, NextStep, Nintendo 3DS Nintendo Switch,
+    NonStop OS, NuttX, OpenBSD, OpenStep, Orbis OS, OS/2, OS21, Plan 9,
+    PlayStation Portable, QNX, Qubes OS, ReactOS, Redox, RISC OS, ROS,
+    RTEMS, Sailfish OS, SCO Unix, Serenity, SINIX-Z, SkyOS, software,
+    Solaris, Sortix, SunOS, Syllable OS, Symbian, Tizen, TPF, Tru64, tvOS,
+    ucLinux, Ultrix, UNICOS, UnixWare, VMS, vxWorks, watchOS, Wear OS,
+    WebOS, Wii system Wii U, Windows CE, Windows, Xbox System, Xenix, z/OS,
+    z/TPF, z/VM, z/VSE, Zephyr
 
 ## 28 CPU Architectures