diff --git a/ports/rsm-mmio/portfile.cmake b/ports/rsm-mmio/portfile.cmake
index cec066167175f0..83bc1f462c824c 100644
--- a/ports/rsm-mmio/portfile.cmake
+++ b/ports/rsm-mmio/portfile.cmake
@@ -2,8 +2,8 @@ vcpkg_check_linkage(ONLY_STATIC_LIBRARY)
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO Ryan-rsm-McKenzie/mmio
-    REF 1.1.0
-    SHA512 54c63c345d9e0a284d13078d525fcbe73d793462968121fee89a19c810cdac736aca9c81f4c8b4f5ea51db1c47ad0c55e7cea38772049e4939b0d6e280f9a332
+    REF 2.0.0
+    SHA512 a1b0d586c12708233c0379b16a9f60bab27f12cb414736ee245e37888622ac352e834a58808127087788f930311125e2b26e6dad156c72e68143f95910cda48f
     HEAD_REF main
 )
 
diff --git a/ports/rsm-mmio/vcpkg.json b/ports/rsm-mmio/vcpkg.json
index b88664f9c89b99..f88d47d5e8d8da 100644
--- a/ports/rsm-mmio/vcpkg.json
+++ b/ports/rsm-mmio/vcpkg.json
@@ -1,9 +1,9 @@
 {
   "name": "rsm-mmio",
-  "version-semver": "1.1.0",
-  "port-version": 2,
-  "description": "A cross-platform memory-mapped io library for C++ ",
+  "version-semver": "2.0.0",
+  "description": "A cross-platform memory-mapped io library for C++",
   "homepage": "https://github.com/Ryan-rsm-McKenzie/mmio",
+  "license": "MIT",
   "supports": "!osx & !uwp",
   "dependencies": [
     {
diff --git a/versions/baseline.json b/versions/baseline.json
index ec1ac7c1a97fb9..b678486863d0e9 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -7169,8 +7169,8 @@
       "port-version": 0
     },
     "rsm-mmio": {
-      "baseline": "1.1.0",
-      "port-version": 2
+      "baseline": "2.0.0",
+      "port-version": 0
     },
     "rsocket": {
       "baseline": "2021.08.30.00",
diff --git a/versions/r-/rsm-mmio.json b/versions/r-/rsm-mmio.json
index 31ae61086639b9..7f14bad7728fd9 100644
--- a/versions/r-/rsm-mmio.json
+++ b/versions/r-/rsm-mmio.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "9e1a7d844e1e48dab00aab46943a739a4fe2f3e4",
+      "version-semver": "2.0.0",
+      "port-version": 0
+    },
     {
       "git-tree": "b64c5538a5de9cc3e4e516ba97f437480b94c6f0",
       "version-semver": "1.1.0",