diff --git a/ports/gl3w/portfile.cmake b/ports/gl3w/portfile.cmake
index 2633bf05a4..741ad862d7 100644
--- a/ports/gl3w/portfile.cmake
+++ b/ports/gl3w/portfile.cmake
@@ -14,8 +14,12 @@ file(COPY "${CURRENT_INSTALLED_DIR}/include/KHR/khrplatform.h" DESTINATION "${SO
 
 vcpkg_find_acquire_program(PYTHON3)
 
+if("ext" IN_LIST FEATURES)
+    set(EXT "--ext")
+endif()
+
 vcpkg_execute_required_process(
-  COMMAND "${PYTHON3}" "${SOURCE_PATH}/gl3w_gen.py"
+  COMMAND "${PYTHON3}" "${SOURCE_PATH}/gl3w_gen.py" "${EXT}"
   WORKING_DIRECTORY "${SOURCE_PATH}"
   LOGNAME gl3w-gen
 )
diff --git a/ports/gl3w/vcpkg.json b/ports/gl3w/vcpkg.json
index 0963571711..dedfee6795 100644
--- a/ports/gl3w/vcpkg.json
+++ b/ports/gl3w/vcpkg.json
@@ -1,7 +1,7 @@
 {
   "name": "gl3w",
   "version-date": "2018-05-31",
-  "port-version": 4,
+  "port-version": 5,
   "description": "Simple OpenGL core profile loading",
   "homepage": "https://github.com/skaslev/gl3w",
   "dependencies": [
@@ -15,5 +15,10 @@
       "name": "vcpkg-cmake-config",
       "host": true
     }
-  ]
+  ],
+  "features": {
+    "ext": {
+      "description": "include the GL Extensions in output header"
+    }
+  }
 }
diff --git a/versions/baseline.json b/versions/baseline.json
index 3b89319341..f76316bdf0 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -3042,7 +3042,7 @@
     },
     "gl3w": {
       "baseline": "2018-05-31",
-      "port-version": 4
+      "port-version": 5
     },
     "glad": {
       "baseline": "0.1.36",
diff --git a/versions/g-/gl3w.json b/versions/g-/gl3w.json
index a5cb2544dc..c2a8e61c21 100644
--- a/versions/g-/gl3w.json
+++ b/versions/g-/gl3w.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "a79b7a69f540bf9cd71464cabdfdd5cd67e72072",
+      "version-date": "2018-05-31",
+      "port-version": 5
+    },
     {
       "git-tree": "618626b6f1118dc2c80fa7bd2aae497c0d83b7c1",
       "version-date": "2018-05-31",