diff --git a/README.md b/README.md
index e9ff72d..da72974 100644
--- a/README.md
+++ b/README.md
@@ -60,6 +60,7 @@ Also compares versions lexicographically.
     "",
     "ANYOS",
     "posix_2017",
+    "posix_2024",
     "aix",
     "android",
     "darwin",
diff --git a/triplet.js b/triplet.js
index 3c0270d..9481225 100644
--- a/triplet.js
+++ b/triplet.js
@@ -195,7 +195,8 @@ var Triplet = ('object' === typeof module && exports) || {};
     SOLARIS: { os: 'solaris' },
 
     // Any
-    POSIX: { os: 'posix_2017', arch: 'ANYARCH', vendor: 'unknown' },
+    POSIX_2017: { os: 'posix_2017', arch: 'ANYARCH', vendor: 'unknown' },
+    POSIX_2024: { os: 'posix_2024', arch: 'ANYARCH', vendor: 'unknown' },
     WASI: { os: 'wasi', vendor: 'unknown' },
 
     // Arches
@@ -269,8 +270,9 @@ var Triplet = ('object' === typeof module && exports) || {};
   tpm['solaris'] = T.SOLARIS;
   tpm['solaris_11'] = T.SOLARIS;
   // System Interfaces (POSIX, WASI)
-  tpm['posix'] = T.POSIX;
-  tpm['posix_2017'] = T.POSIX;
+  tpm['posix'] = T.POSIX_2017;
+  tpm['posix_2017'] = T.POSIX_2017;
+  tpm['posix_2024'] = T.POSIX_2024;
   tpm['wasi'] = T.WASI;
 
   // OS + Arch
diff --git a/types.js b/types.js
index 207fdda..be81057 100644
--- a/types.js
+++ b/types.js
@@ -3,7 +3,7 @@
 module.exports._types = true;
 
 /**
- * @typedef {""|"ANYOS"|"posix_2017"|"aix"|"android"|"darwin"|"dragonfly"|"freebsd"|"illumos"|"linux"|"netbsd"|"openbsd"|"plan9"|"solaris"|"sunos"|"wasi"|"windows"} OsString
+ * @typedef {""|"ANYOS"|"posix_2024"|"posix_2017"|"aix"|"android"|"darwin"|"dragonfly"|"freebsd"|"illumos"|"linux"|"netbsd"|"openbsd"|"plan9"|"solaris"|"sunos"|"wasi"|"windows"} OsString
  */
 
 /**