diff --git a/ports/cpp-peglib/portfile.cmake b/ports/cpp-peglib/portfile.cmake
index c8a657dd2d..7a060bb5ca 100644
--- a/ports/cpp-peglib/portfile.cmake
+++ b/ports/cpp-peglib/portfile.cmake
@@ -3,7 +3,7 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO yhirose/cpp-peglib
     REF "v${VERSION}"
-    SHA512 c579da831822459c643c43be64eded925b2364bc1ae6b99ab8eaeeb48f441ecc2c019b08313027fd12113a1356826c7570d0c8b1b0ea7eef6984d810903b92c4
+    SHA512 084e2770a6f73a66a90b43bae0f2c372c1767ca975e2ca2581f38b1828c3587bcfe400868cb5710b7546b499e516040fe33145a2c4098c15de11d384f6377bf4
     HEAD_REF master
 )
 
diff --git a/ports/cpp-peglib/vcpkg.json b/ports/cpp-peglib/vcpkg.json
index 325826d332..1fbc0a5047 100644
--- a/ports/cpp-peglib/vcpkg.json
+++ b/ports/cpp-peglib/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "cpp-peglib",
-  "version": "1.8.6",
+  "version": "1.9.0",
   "description": "C++11 header-only PEG (Parsing Expression Grammars) library.",
   "license": "MIT"
 }
diff --git a/versions/baseline.json b/versions/baseline.json
index 4ba3a848df..0e00ab84e6 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -1905,7 +1905,7 @@
       "port-version": 9
     },
     "cpp-peglib": {
-      "baseline": "1.8.6",
+      "baseline": "1.9.0",
       "port-version": 0
     },
     "cpp-redis": {
diff --git a/versions/c-/cpp-peglib.json b/versions/c-/cpp-peglib.json
index e75bfec2c6..527b7d7712 100644
--- a/versions/c-/cpp-peglib.json
+++ b/versions/c-/cpp-peglib.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "ad61047a51713b6c2a3d1d6be1bf48e4b536bc26",
+      "version": "1.9.0",
+      "port-version": 0
+    },
     {
       "git-tree": "aab20faa46849572df0241317b6b5c309a77ac70",
       "version": "1.8.6",