diff --git a/ports/expat/portfile.cmake b/ports/expat/portfile.cmake
index 3caeee497cbe2e..850931e72cb771 100644
--- a/ports/expat/portfile.cmake
+++ b/ports/expat/portfile.cmake
@@ -4,7 +4,7 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO libexpat/libexpat
     REF "${REF}"
-    SHA512 370c1c8d6f6d55190ad60141c694ca16b33b020c300efd39fe90f084e3f23a63be4886bb954d126c0cecc87d8c9e8c29f38ed2b2d47775ec0293b2d63ef921d4
+    SHA512 6a6c5b0f6a1b2c70715701aeab688e476943704c492a0f2f8afd7fea84615a8d9569eb2b699912676058eff6a7bbdd78b48110ed67ab0250a3d41fe8f128f4e1
     HEAD_REF master
 )
 
diff --git a/ports/expat/vcpkg.json b/ports/expat/vcpkg.json
index 9a28b9184f3bda..f3827e51662edc 100644
--- a/ports/expat/vcpkg.json
+++ b/ports/expat/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "expat",
-  "version": "2.6.3",
+  "version": "2.6.4",
   "description": "XML parser library written in C",
   "homepage": "https://github.com/libexpat/libexpat",
   "license": "MIT",
diff --git a/versions/baseline.json b/versions/baseline.json
index 1f38897927c65b..d630589179a37b 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -2629,7 +2629,7 @@
       "port-version": 2
     },
     "expat": {
-      "baseline": "2.6.3",
+      "baseline": "2.6.4",
       "port-version": 0
     },
     "expected-lite": {
@@ -5665,8 +5665,8 @@
       "port-version": 1
     },
     "luau": {
-        "baseline": "0.651",
-        "port-version": 0
+      "baseline": "0.651",
+      "port-version": 0
     },
     "luminoengine": {
       "baseline": "0.10.1",
diff --git a/versions/e-/expat.json b/versions/e-/expat.json
index 75fe9b2eaf2048..ca2b37e62eb68f 100644
--- a/versions/e-/expat.json
+++ b/versions/e-/expat.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "97dd7e516104f330e1bb5eafff10852211dbd2df",
+      "version": "2.6.4",
+      "port-version": 0
+    },
     {
       "git-tree": "9649f61e2f302f608dfb98d6f366e0a08e413487",
       "version": "2.6.3",