diff --git a/ports/rego-cpp/portfile.cmake b/ports/rego-cpp/portfile.cmake
index 28967482533de1..30a0ef6364c3bb 100644
--- a/ports/rego-cpp/portfile.cmake
+++ b/ports/rego-cpp/portfile.cmake
@@ -2,7 +2,7 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO microsoft/rego-cpp
     REF "v${VERSION}"
-    SHA512 76bdec6d86b4192290e3f140068216a11d65d49f34cabb44bf775a0385e4ac8281390a4f4e89ad636c6ef417feac71a0004894f76e9462f4764e1a3d1379937b
+    SHA512 d600bc65b9bc142944a56a63c09a3124978799463046d0f048ae1ce7b7652f0c1469a16387c2495070cf3ffd6eca1ea5ed667eb5e2c236f989d49ec748f9a519
     HEAD_REF main
 )
 
diff --git a/ports/rego-cpp/vcpkg.json b/ports/rego-cpp/vcpkg.json
index 70101dcef968f5..6475770ad3d816 100644
--- a/ports/rego-cpp/vcpkg.json
+++ b/ports/rego-cpp/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "rego-cpp",
-  "version": "1.3.1",
+  "version": "1.4.0",
   "description": "A C++ interpreter for the OPA Rego policy language",
   "homepage": "https://github.com/microsoft/rego-cpp",
   "license": "MIT",
diff --git a/versions/baseline.json b/versions/baseline.json
index 6f090fd869f408..2d05a08d963b6f 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -8673,7 +8673,7 @@
       "port-version": 0
     },
     "rego-cpp": {
-      "baseline": "1.3.1",
+      "baseline": "1.4.0",
       "port-version": 0
     },
     "rendergraph": {
diff --git a/versions/r-/rego-cpp.json b/versions/r-/rego-cpp.json
index 1e3334717feef5..c00f87d2d3ac71 100644
--- a/versions/r-/rego-cpp.json
+++ b/versions/r-/rego-cpp.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "011ba55c6ab2462630b31f28fa5ff57b2a618f8a",
+      "version": "1.4.0",
+      "port-version": 0
+    },
     {
       "git-tree": "e20af4cc2ce3b012c7a39dcf669fe049d5fed86a",
       "version": "1.3.1",