diff --git a/ports/s2n/portfile.cmake b/ports/s2n/portfile.cmake
index fd874cfd74..ffd1270cf1 100644
--- a/ports/s2n/portfile.cmake
+++ b/ports/s2n/portfile.cmake
@@ -2,7 +2,7 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO aws/s2n-tls
     REF "v${VERSION}"
-    SHA512 41abcde197e30845e64b3b63e2edf32b66611723505d176cbe439d5cc91dccf1c6dff0c53d896e5cfa5bbb65362a36dbe200883f658f47635b526c2fdf67210e
+    SHA512 10a6dcf6669ca97d65f009a692075c858b9b344c535487f64b4b2046f0cda0241c884fdc3d8f054a3bf85d080582a1000b6edca2b3bf98f7aa62857ac97443b2
     PATCHES
         fix-cmake-target-path.patch
 )
diff --git a/ports/s2n/vcpkg.json b/ports/s2n/vcpkg.json
index 78eb4616c0..c4f2080ca4 100644
--- a/ports/s2n/vcpkg.json
+++ b/ports/s2n/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "s2n",
-  "version": "1.4.16",
+  "version": "1.5.5",
   "description": "C99 implementation of the TLS/SSL protocols.",
   "homepage": "https://github.com/aws/s2n-tls",
   "license": "Apache-2.0",
diff --git a/versions/baseline.json b/versions/baseline.json
index bc5cd6adb9..7e0018f76c 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -8045,7 +8045,7 @@
       "port-version": 0
     },
     "s2n": {
-      "baseline": "1.4.16",
+      "baseline": "1.5.5",
       "port-version": 0
     },
     "safeint": {
diff --git a/versions/s-/s2n.json b/versions/s-/s2n.json
index 90e0d3b873..bcc291f0e0 100644
--- a/versions/s-/s2n.json
+++ b/versions/s-/s2n.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "eb07be3d0d2f927badd5e4add1727a7104811c9b",
+      "version": "1.5.5",
+      "port-version": 0
+    },
     {
       "git-tree": "cf330f1b71f9308d5af43845a67b5105b5cee213",
       "version": "1.4.16",