diff --git a/ports/aws-c-io/portfile.cmake b/ports/aws-c-io/portfile.cmake
index 1edcfc8c7b..dac53962d1 100644
--- a/ports/aws-c-io/portfile.cmake
+++ b/ports/aws-c-io/portfile.cmake
@@ -2,14 +2,14 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO awslabs/aws-c-io
     REF "v${VERSION}"
-    SHA512 e812fd7168c0b71cc98a7f835dd3dd48174d0c14e5d92ed10b5ecf558fc29bed2b4adf32f55408ee3ed7f54dfaa50d9f12334f5c89b0d76cedb800fb08daf483
+    SHA512 f0a16581dcb3f11d1c8b883f9eeffd2cfc029868683488da0193dce7dd619b5d17843baeaa944da122a0281ae0e58d78b5e50a2bcc10773d0059e3c50bd80500
     HEAD_REF main
 )
 
 vcpkg_cmake_configure(
     SOURCE_PATH "${SOURCE_PATH}"
     OPTIONS
-        "-DCMAKE_MODULE_PATH=${CURRENT_INSTALLED_DIR}/share/aws-c-common" # use extra cmake files
+        "-DCMAKE_PREFIX_PATH=${CURRENT_INSTALLED_DIR}/share/aws-c-common/modules" # use extra cmake files
         -DBUILD_TESTING=FALSE
 )
 
diff --git a/ports/aws-c-io/vcpkg.json b/ports/aws-c-io/vcpkg.json
index 6c11678369..003bdf76d3 100644
--- a/ports/aws-c-io/vcpkg.json
+++ b/ports/aws-c-io/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "aws-c-io",
-  "version": "0.27.7",
+  "version": "1.0.0",
   "description": "Handles all IO and TLS work for application protocols.",
   "homepage": "https://github.com/awslabs/aws-c-io",
   "license": "Apache-2.0",
diff --git a/versions/a-/aws-c-io.json b/versions/a-/aws-c-io.json
index ac0a024461..0325c3354e 100644
--- a/versions/a-/aws-c-io.json
+++ b/versions/a-/aws-c-io.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "45bcf5aaed7b67c8f3d3f3c79c23af5324ce2b41",
+      "version": "1.0.0",
+      "port-version": 0
+    },
     {
       "git-tree": "425ee481cc6e0013079b6316228fb49d3a528679",
       "version": "0.27.7",
diff --git a/versions/baseline.json b/versions/baseline.json
index 009c3a289e..de9e88bf8d 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -489,7 +489,7 @@
       "port-version": 0
     },
     "aws-c-io": {
-      "baseline": "0.27.7",
+      "baseline": "1.0.0",
       "port-version": 0
     },
     "aws-c-mqtt": {